References to diagonal
211 seqfan posts
Sun Jul 29 13:16:56 CEST 2012 [seqfan] Re: Conway's subprime Fibonacci sequences
Fri Jul 27 20:49:25 CEST 2012 [seqfan] Re: Conway's subprime Fibonacci sequences
Fri Jul 27 17:06:08 CEST 2012 [seqfan] Re: Conway's subprime Fibonacci sequences
Sun Jul 22 19:35:40 CEST 2012 [seqfan] Re: Problems posed regarding A004736 and A003983.
Sun Jul 22 09:51:33 CEST 2012 [seqfan] Problems posed regarding A004736 and A003983.
Sat Jul 7 18:17:24 CEST 2012 [seqfan] Re: Fibonacci derivatives
Sat Jul 7 14:29:21 CEST 2012 [seqfan] Re: Fibonacci derivatives
Sat Jul 7 12:25:13 CEST 2012 [seqfan] Re: Fibonacci derivatives
Sat Jul 7 04:26:37 CEST 2012 [seqfan] Re: Fibonacci derivatives
Sat Jun 2 22:53:33 CEST 2012 [seqfan] Re: A generalized Gilbreath's conjecture, or "lizard's effect" for primes
Sat Jun 2 20:00:26 CEST 2012 [seqfan] Re: A generalized Gilbreath's conjecture, or "lizard's effect" for primes
Sun May 20 12:51:11 CEST 2012 [seqfan] Mixture of partitioning and divisibility, formulas?
Tue Apr 24 15:10:40 CEST 2012 [seqfan] Fwd: OEIS Help-me
Thu Apr 12 09:57:20 CEST 2012 [seqfan] Re: A182080: nice sequence needing more terms
Thu Mar 29 17:03:35 CEST 2012 [seqfan] Re: Prove formula? Simple formula, difficult enumeration
Mon Mar 26 02:03:29 CEST 2012 [seqfan] Re: nxn grids colored black and white
Mon Mar 26 01:33:48 CEST 2012 [seqfan] nxn grids colored black and white
Tue Mar 20 20:19:46 CET 2012 [seqfan] Re: Any other thoughts, opinions on (in)finiteness of A020995?
Tue Mar 20 19:42:50 CET 2012 [seqfan] Re: SeqFan Digest, Vol 42, Issue 7
Sun Mar 11 18:30:31 CET 2012 [seqfan] Re: additions for completeness' sake
Sun Mar 11 14:42:56 CET 2012 [seqfan] Re: additions for completeness' sake
Sun Mar 11 14:12:52 CET 2012 [seqfan] additions for completeness' sake
Thu Feb 23 16:42:45 CET 2012 [seqfan] Re: Question on A001761
Wed Feb 15 23:46:56 CET 2012 [seqfan] Re: An "add or make the absolute difference" array
Wed Feb 15 19:09:50 CET 2012 [seqfan] Re: An "add or make the absolute difference" array
Wed Feb 15 15:22:38 CET 2012 [seqfan] An "add or make the absolute difference" array
Sun Feb 5 18:32:11 CET 2012 [seqfan] Re: 2X2 -n..n with inverse in -n..n and totient function?
Sat Feb 4 16:54:30 CET 2012 [seqfan] Re: 2X2 -n..n with inverse in -n..n and totient function?
Sun Jan 22 13:21:37 CET 2012 [seqfan] Re: A063841
Fri Jan 20 00:40:36 CET 2012 [seqfan] Re: A063841
Thu Jan 19 17:43:33 CET 2012 [seqfan] Re: A063841
Thu Jan 19 17:33:59 CET 2012 [seqfan] A063841
Mon Jan 9 17:30:17 CET 2012 [seqfan] Re: Array where a permutation of the primes produces all non-primes
Mon Jan 9 14:23:52 CET 2012 [seqfan] Array where a permutation of the primes produces all non-primes
Mon Jan 9 08:28:22 CET 2012 [seqfan] Re: A seemingly pathological result related to A057059.
Mon Jan 9 08:20:40 CET 2012 [seqfan] A seemingly pathological result related to A057059.
Fri Dec 30 18:34:14 CET 2011 [seqfan] Re: A December quiz with a non-prime array
Fri Dec 23 07:47:02 CET 2011 [seqfan] Re: A140993
Fri Dec 23 03:45:04 CET 2011 [seqfan] Re: A140993
Fri Dec 23 02:33:04 CET 2011 [seqfan] A140993
Wed Dec 14 16:20:29 CET 2011 [seqfan] Re: Mathematica code for A050446.
Wed Dec 14 20:28:24 CET 2011 [seqfan] Re: Mathematica code for A050446.
Wed Dec 14 15:15:26 CET 2011 [seqfan] Re: Mathematica code for A050446.
Wed Dec 14 12:29:37 CET 2011 [seqfan] Re: Mathematica code for A050446.
Wed Dec 14 06:42:55 CET 2011 [seqfan] Mathematica code for A050446.
Tue Dec 6 08:57:23 CET 2011 [seqfan] A new triangle revisited
Mon Nov 28 01:53:03 CET 2011 [seqfan] Help needed with triangle related to new sequence
Thu Nov 24 07:22:41 CET 2011 [seqfan] Re: sequence challenge
Wed Nov 23 08:36:19 CET 2011 [seqfan] Re: a last-minute entry for the A200000 race
Wed Nov 23 05:24:25 CET 2011 [seqfan] Re: a last-minute entry for the A200000 race
Tue Nov 22 06:31:32 CET 2011 [seqfan] Re: a last-minute entry for the A200000 race
Tue Nov 22 03:04:49 CET 2011 [seqfan] Sequence (a triangle) related to A141419, not in OEIS?
Fri Nov 4 13:07:07 CET 2011 [seqfan] Re: A002251 rediscovered as "home-sick queens"
Mon Oct 10 19:14:11 CEST 2011 [seqfan] Boomerangs
Sat Aug 27 22:45:25 CEST 2011 [seqfan] Re: Number array not found in OEIS
Sat Aug 27 16:31:36 CEST 2011 [seqfan] Re: Number array not found in OEIS
Sat Aug 27 14:30:37 CEST 2011 [seqfan] Re: Number array not found in OEIS
Fri Aug 19 20:51:26 CEST 2011 [seqfan] Re: Is 0001 a 4-digit base 10 number ?
Tue Aug 16 20:47:58 CEST 2011 [seqfan] Triangular rooks in triangular array and polynomials
Mon Jul 25 14:20:37 CEST 2011 [seqfan] Re: A193376 Tabl = 20 existing sequences
Mon Jul 25 06:24:51 CEST 2011 [seqfan] Re: A193376 Tabl = 20 existing sequences
Mon Jul 25 03:04:01 CEST 2011 [seqfan] A193376 Tabl = 20 existing sequences
Fri Jul 22 22:43:20 CEST 2011 [seqfan] inverse binomial transform on diagonals of triangular table
Sat Jul 9 23:41:54 CEST 2011 [seqfan] Help needed with Mathematica program for square array with two linked recurrences.
Wed Jun 29 20:52:14 CEST 2011 [seqfan] Re: Formulas needed for new sequence.
Wed Jun 29 10:27:34 CEST 2011 [seqfan] Re: Formulas needed for new sequence.
Wed Jun 29 10:25:44 CEST 2011 [seqfan] Re: Formulas needed for new sequence.
Wed Jun 29 06:26:53 CEST 2011 [seqfan] Formulas needed for new sequence.
Sat Jun 18 18:13:23 CEST 2011 [seqfan] Re: A recurrence for the Dirichlet inverse of the Euler totient function.
Sat Jun 18 17:20:11 CEST 2011 [seqfan] Re: A recurrence for the Dirichlet inverse of the Euler totient function.
Fri Jun 17 22:19:14 CEST 2011 [seqfan] A recurrence for the Dirichlet inverse of the Euler totient function.
Tue May 31 07:41:22 CEST 2011 [seqfan] Re: triangular partitions
Tue May 31 04:15:14 CEST 2011 [seqfan] triangular partitions
Sun May 29 20:44:24 CEST 2011 [seqfan] Repeated largest or second largest factor in term ratio
Fri Apr 29 12:30:24 CEST 2011 [seqfan] Re: Closed form from recurrence? Isosceles right triangles on a grid
Mon Apr 25 12:58:39 CEST 2011 [seqfan] Re: Right Triangle Count on an nXk grid - same effect as rhombuses
Mon Apr 25 03:26:46 CEST 2011 [seqfan] Right Triangle Count on an nXk grid - same effect as rhombuses
Mon Apr 4 21:37:11 CEST 2011 [seqfan] Re: T(n,k) guess the formula
Mon Apr 4 20:48:39 CEST 2011 [seqfan] Re: T(n,k) guess the formula
Mon Apr 4 19:39:51 CEST 2011 [seqfan] T(n,k) guess the formula
Fri Apr 1 15:23:20 CEST 2011 [seqfan] Re: Tabl formula?
Fri Apr 1 13:14:32 CEST 2011 [seqfan] Tabl formula?
Tue Mar 8 08:40:10 CET 2011 [seqfan] Re: polygon triangulation
Tue Mar 8 04:27:35 CET 2011 [seqfan] Catalan triangles, polynomials and basket weaving
Mon Mar 7 20:20:15 CET 2011 [seqfan] polygon triangulation
Sat Mar 5 19:00:03 CET 2011 [seqfan] The ordinary generating function for the Moebius function
Sat Feb 26 15:13:50 CET 2011 [seqfan] Re: « King-walking » integers in a square box
Fri Feb 25 22:00:12 CET 2011 [seqfan] Re: « King-walking » integers in a square box
Fri Feb 18 08:59:59 CET 2011 [seqfan] Re: Sequence re partitions of n-gon needs more terms
Wed Feb 2 18:36:06 CET 2011 [seqfan] Re: symmetric 0-1 matrices
Wed Feb 2 15:54:45 CET 2011 [seqfan] Re: symmetric 0-1 matrices
Wed Feb 2 14:19:09 CET 2011 [seqfan] symmetric 0-1 matrices
Tue Jan 4 05:30:45 CET 2011 [seqfan] Unlabeled super-Catalan - was unlabeled Motzkin
Sun Jan 2 20:42:19 CET 2011 [seqfan] Re: T(n, k)=Number of nondecreasing arrangements of n numbers in -k..k with sum zero
Sun Jan 2 19:46:21 CET 2011 [seqfan] Re: T(n, k)=Number of nondecreasing arrangements of n numbers in -k..k with sum zero
Wed Dec 29 23:59:26 CET 2010 [seqfan] Tiling and Diagonal Sums
Tue Dec 14 01:40:21 CET 2010 [seqfan] T(n, k)=Number of nondecreasing arrangements of n numbers in -k..k with sum zero
Fri Dec 10 15:36:29 CET 2010 [seqfan] Re: Semiprimes n such that n divides Fibonacci number F(n-1).
Thu Dec 9 22:37:14 CET 2010 [seqfan] Semiprimes n such that n divides Fibonacci number F(n-1).
Thu Dec 2 19:28:44 CET 2010 [seqfan] Re: Lack-a-day
Wed Oct 27 23:36:05 CEST 2010 [seqfan] Re: unlabeled Motzkin numbers
Wed Oct 27 02:52:43 CEST 2010 [seqfan] Re: nXk 1..Q matrices with each value adjacent to each other value
Sat Oct 2 02:57:56 CEST 2010 [seqfan] Matrix of 1..n*k permutation ordered by rows, columns and diagonals
Wed Sep 29 18:33:00 CEST 2010 [seqfan] Re: sequence warnings?
Sun Sep 26 06:48:14 CEST 2010 [seqfan] Re: n-th number whose sum of divisors is a n-gonal number
Sun Sep 26 05:22:18 CEST 2010 [seqfan] Re: n-th number whose sum of divisors is a n-gonal number
Sun Sep 26 04:07:37 CEST 2010 [seqfan] Re: n-th number whose sum of divisors is a n-gonal number
Sun Sep 26 02:47:47 CEST 2010 [seqfan] Re: n-th number whose sum of divisors is a n-gonal number
Sat Sep 25 22:43:13 CEST 2010 [seqfan] n-th number whose sum of divisors is a n-gonal number
Tue Sep 14 10:12:57 CEST 2010 [seqfan] non-intersecting rook paths from corner to corner
Sun Sep 5 02:08:10 CEST 2010 [seqfan] Re: x(i-1) = ( x(i+1) - x(i)) mod M, period-N solutions?
Sat Sep 4 16:51:08 CEST 2010 [seqfan] Re: x(i-1) = ( x(i+1) - x(i)) mod M, period-N solutions?
Wed Sep 1 04:14:27 CEST 2010 [seqfan] Re: binomial ( m!, n) ?
Mon Aug 23 23:24:07 CEST 2010 [seqfan] Re: Error in A180269 Primes of the form 3^3+3*n+1
Thu Aug 19 15:01:49 CEST 2010 [seqfan] Re: Fibonacci-sums
Sat Aug 14 14:29:53 CEST 2010 [seqfan] Re: « King-walking » integers in a square box
Fri Aug 13 18:55:34 CEST 2010 [seqfan] Re: Is this right? Main diagonal A[n.n] of array A[k, n] = n-th natural number m such that m and m+2 are both divisible by exactly k primes (counted with multiplicity).
Fri Aug 13 10:38:32 CEST 2010 [seqfan] Re: Is this right? Main diagonal A[n.n] of array A[k, n] = n-th natural number m such that m and m+2 are both divisible by exactly k primes (counted with multiplicity).
Thu Aug 12 22:27:38 CEST 2010 [seqfan] Re: OEIS in Science News
Thu Aug 12 21:07:41 CEST 2010 [seqfan] Re: Is this right? Main diagonal A[n.n] of array A[k, n] = n-th natural number m such that m and m+2 are both divisible by exactly k primes (counted with multiplicity).
Thu Aug 12 20:48:48 CEST 2010 [seqfan] Re: Is this right? Main diagonal A[n.n] of array A[k, n] = n-th natural number m such that m and m+2 are both divisible by exactly k primes (counted with multiplicity).
Thu Aug 12 20:24:17 CEST 2010 [seqfan] Re: Is this right? Main diagonal A[n.n] of array A[k, n] = n-th natural number m such that m and m+2 are both divisible by exactly k primes (counted with multiplicity).
Thu Aug 12 20:05:40 CEST 2010 [seqfan] Is this right? Main diagonal A[n.n] of array A[k, n] = n-th natural number m such that m and m+2 are both divisible by exactly k primes (counted with multiplicity).
Tue Jul 27 19:31:22 CEST 2010 [seqfan] Re: Permutations along all diagonals and subdiagonals
Tue Jul 27 17:22:35 CEST 2010 [seqfan] Re: Permutations along all diagonals and subdiagonals
Tue Jul 27 17:03:46 CEST 2010 [seqfan] Re: Permutations along all diagonals and subdiagonals
Tue Jul 27 16:06:34 CEST 2010 [seqfan] Re: Permutations along all diagonals and subdi
Tue Jul 27 16:03:51 CEST 2010 [seqfan] Re: Permutations along all diagonals and subdiagonals
Tue Jul 27 15:13:12 CEST 2010 [seqfan] Re: Permutations along all diagonals and subdiagonals
Tue Jul 27 14:01:05 CEST 2010 [seqfan] Re: Permutations along all diagonals and subdiagonals
Tue Jul 27 04:11:52 CEST 2010 [seqfan] Re: Permutations along all diagonals and subdiagonals
Tue Jul 27 04:05:18 CEST 2010 [seqfan] Permutations along all diagonals and subdiagonals
Sat Jul 24 03:24:36 CEST 2010 [seqfan] Re: « King-walking » integers in a square box
Fri Jul 23 16:50:20 CEST 2010 [seqfan] « King-walking » integers in a square box
Wed Jun 30 13:07:48 CEST 2010 [seqfan] Re: b-files for apparently matching sequences?
Wed Jun 30 10:34:44 CEST 2010 [seqfan] Re: b-files for apparently matching sequences?
Mon Jun 21 20:59:50 CEST 2010 [seqfan] My first YouTube flame, for "Ulam spiral"
Sun Jun 6 10:45:59 CEST 2010 [seqfan] Re: A048200 variant: invert [1, 2, ..., n] allowing one swap and two shift-rotate operations
Fri Jun 4 18:01:20 CEST 2010 [seqfan] Re: 3D version of A000938: 3-in-line inside the nXnXn cube
Sun May 16 15:57:25 CEST 2010 [seqfan] Periodic Signs in Inverse x/(1 + log(1+x)) ?
Mon Mar 22 16:25:58 CET 2010 [seqfan] Re: Sum +-j +-(j+1) +-(j+2) ... +-i equals zero.
Mon Mar 22 12:16:04 CET 2010 [seqfan] Re: Sum +-j +-(j+1) +-(j+2) ... +-i equals zero.
Mon Mar 22 04:03:25 CET 2010 [seqfan] Re: Sum +-j +-(j+1) +-(j+2) ... +-i equals zero.
Mon Mar 22 03:32:04 CET 2010 [seqfan] Sum +-j +-(j+1) +-(j+2) ... +-i equals zero.
Thu Mar 4 16:44:37 CET 2010 [seqfan] Re: A triangular observation (nothing proved)
Mon Mar 1 17:01:14 CET 2010 [seqfan] Re: g(k) = (k^2)!*prod(j=0, k-1, j!/(j+k)!)
Mon Mar 1 15:50:27 CET 2010 [seqfan] Re: g(k) = (k^2)!*prod(j=0, k-1, j!/(j+k)!)
Mon Mar 1 00:49:07 CET 2010 [seqfan] g(k) = (k^2)!*prod(j=0, k-1, j!/(j+k)!)
Mon Feb 22 22:03:35 CET 2010 [seqfan] Fibonacci numbers that produce primes when their digits (base k) are reversed
Fri Feb 12 20:04:05 CET 2010 [seqfan] g(k) = (n^2)!*prod(k=0, n-1, k!/(n+k)!)
Sat Feb 6 04:19:05 CET 2010 [seqfan] I can only give the first 4 values of the main diagonal of Generalized Cullen primes
Sat Jan 9 00:45:39 CET 2010 [seqfan] seqs from "Computing the number of numerical semigroups using generating functions"
Thu Jan 7 20:37:44 CET 2010 [seqfan] seq from enumerating Classical dimers on the triangular lattice
Wed Dec 30 04:53:14 CET 2009 [seqfan] Re: Help wanted on A005646 connection to A000055
Wed Dec 30 04:35:16 CET 2009 [seqfan] Progress on columns of "A005646 triangle"
Wed Dec 30 00:00:57 CET 2009 [seqfan] Re: Help wanted on A005646 connection to A000055
Tue Dec 29 18:17:00 CET 2009 [seqfan] Asymptotic pattern in columns of "A005646 triangle"
Tue Dec 29 12:21:35 CET 2009 [seqfan] Re: Help wanted on A005646 connection to A000055
Tue Dec 29 02:55:03 CET 2009 [seqfan] Help wanted on A005646 connection to A000055
Fri Dec 18 15:20:16 CET 2009 [seqfan] Re: Divisibility sequences
Tue Dec 15 02:58:04 CET 2009 [seqfan] Re: [math-fun] Divisibility sequences in OEIS.
Tue Dec 15 02:42:24 CET 2009 [seqfan] Re: [math-fun] Divisibility sequences in OEIS.
Sun Dec 13 19:54:06 CET 2009 [seqfan] Re: [math-fun] Divisibility sequences in OEIS.
Thu Nov 19 04:10:25 CET 2009 [seqfan] Re: pebbles sequence
Thu Nov 19 03:43:23 CET 2009 [seqfan] Re: pebbles sequence
Wed Oct 28 23:46:10 CET 2009 [seqfan] Undecidable sequences?
Wed Oct 28 00:09:19 CET 2009 [seqfan] Re: Number of n X n (0, 1)-matrices having permanent equal to 1
Sat Oct 17 21:42:52 CEST 2009 [seqfan] Re: Base-related sequences, please go factorial!
Fri Oct 16 13:48:33 CEST 2009 [seqfan] Base-related sequences, please go factorial!
Fri Oct 16 08:13:20 CEST 2009 [seqfan] Re: Integers formed by concatenating primes
Thu Oct 15 16:59:55 CEST 2009 [seqfan] Re: re Integers formed by concatenating primes
Fri Oct 9 18:17:47 CEST 2009 [seqfan] Re: A family of quadratic recurrences
Fri Oct 9 16:30:47 CEST 2009 [seqfan] Re: A family of quadratic recurrences
Wed Oct 7 11:59:40 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Mon Oct 5 17:27:35 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Mon Oct 5 17:21:31 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Mon Oct 5 17:06:04 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Mon Oct 5 17:06:04 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Thu Oct 1 21:59:48 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Thu Oct 1 21:39:54 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Thu Oct 1 21:28:07 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Thu Oct 1 20:43:59 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Thu Oct 1 20:32:23 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Thu Oct 1 18:43:04 CEST 2009 [seqfan] Re: a(n) = a(n-1) + [sum of all digits present so far]
Sat Sep 26 18:19:21 CEST 2009 [seqfan] Re: non-congruent diagonals in n-gon A165726
Sat Sep 26 17:25:50 CEST 2009 [seqfan] Re: non-congruent diagonals in n-gon A165726
Sat Sep 26 17:09:49 CEST 2009 [seqfan] Re: non-congruent diagonals in n-gon A165726
Sat Sep 26 16:46:20 CEST 2009 [seqfan] non-congruent diagonals in n-gon A165726
Tue Aug 4 00:35:45 CEST 2009 [seqfan] Re: LRS formulas for n>=...?
Mon Aug 3 23:48:49 CEST 2009 [seqfan] Re: LRS formulas for n>=...?
Fri Jul 31 01:53:54 CEST 2009 [seqfan] Re: A "hard" quaternion-based sequence
Sat Jul 18 18:28:35 CEST 2009 [seqfan] Lattice Squares
Sat Jul 18 15:13:53 CEST 2009 [seqfan] Re: Recaman observation
Thu Jul 9 23:48:41 CEST 2009 [seqfan] Re: Confused about A144204
Thu May 21 03:00:27 CEST 2009 [seqfan] Re: PS re toothpick sequences - the movie version
Fri Apr 17 03:42:03 CEST 2009 [seqfan] Recounting the rationals
Wed Apr 8 20:37:12 CEST 2009 [seqfan] Re: Wrong Formula?
Wed Apr 8 17:04:38 CEST 2009 [seqfan] Re: A generalization of the matrix permanent: question
Tue Apr 7 06:41:14 CEST 2009 [seqfan] Re: A generalization of the matrix permanent: question
Fri Apr 3 00:52:42 CEST 2009 [seqfan] Re: A generalization of the matrix permanent: question
Sun Mar 22 14:55:12 CET 2009 [seqfan] Re: Typo in formula-section of A001541 ?
Sat Mar 7 11:54:06 CET 2009 [seqfan] Re: Squares in a grid
Sat Mar 7 09:12:09 CET 2009 [seqfan] Squares in a grid
Tue Feb 24 03:50:51 CET 2009 [seqfan] Re: Prime Sums In A Grid
Fri Feb 20 22:20:16 CET 2009 [seqfan] Re: Walk like an Egyptian
Fri Feb 20 20:00:42 CET 2009 [seqfan] Walk like an Egyptian
Mon Feb 2 23:06:30 CET 2009 [seqfan] Re: A139414
Thu Jan 8 21:06:34 CET 2009 [seqfan] Re: F Numbers
Tue Dec 30 04:14:31 CET 2008 [seqfan] Re: Two-fold symmetry sequence
Mon Dec 29 23:33:49 CET 2008 [seqfan] Re: Two-fold symmetry sequence
Mon Oct 27 23:41:58 CET 2008 [seqfan] n x n matrices with adjacent entries differing by +/- 1
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
diagonal
Links to OEIS content are included according to
The OEIS End-User License Agreement
.