January 2007 Archives by date

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Starting: Mon Jan 1 03:31:32 CET 2007
Ending: Wed Jan 31 21:16:49 CET 2007
Messages: 306

• Images of 27x27 table of tersums (like Nim-sums but base 3)   Antti Karttunen
• Limit in Triangles for Generalized Bell Numbers, Factorials   Paul D. Hanna
• Proof needed for VERY STRANGE RESULT   Artur
• Proof needed for VERY STRANGE RESULT   Artur
• Wrong Maple Program for A010892?   Rainer Rosenthal
• Wrong Maple Program for A010892?   Artur
• First Occurrence Of Floor(m/d(m))   David Wilson
• Wrong Maple Program for A010892?   Edwin Clark
• Help Needed   Artur
• Wrong Maple Program for A010892?   Peter Pein
• Mailing filter   David Wilson
• Mailing filter   zak seidov
• Help Needed   Jonathan Post
• Help Needed (ascii mail!)   Jaap Spies
• Help Needed   Richard Guy
• Mailing filter   Jaap Spies
• A problem   David Wilson
• Help Needed   Artur
• A problem   Jonathan Post
• Mailing filter   Leroy Quet
• Request for more Python programs   N. J. A. Sloane
• Period length in the continued fraction expansio of sqrt(n)   Thomas Baruchel
• Request for more Python programs   Alec Mihailovs
• Correction   Alec Mihailovs
• Request for more Python programs   Jaap Spies
• Request for more Python programs   Jaap Spies
• Correction   Jaap Spies
• Request for more Python programs   Alec Mihailovs
• Request for more Python programs   Jaap Spies
• Python, A010892 and "Anyone for Twopins"   Rainer Rosenthal
• Request for more Python programs   Alec Mihailovs
• OEIS programs   David Wilson
• Help Needed   Gerald McGarvey
• Unitary Perfect Number   koh
• Corrections and news regarding "Anyone for Twopins"   Rainer Rosenthal
• Unitary Perfect Number   koh
• Request for more Python programs   Jeremy Gardiner
• A108571: Total number of terms   zak seidov
• An euler's totient-related sequence   Nick Hobson
• A108571: Total number of terms   Antti Karttunen
• A108571: Total number of terms, correction.   Antti Karttunen
• OEIS programs   hv at crypt.org
• Limit in Triangles for Generalized Bell Numbers, Factorials   Max A.
• Request for more Python programs   Jaap Spies
• An euler's totient-related sequence   Max A.
• Help Needed   David Wilson
• OEIS programs   N. J. A. Sloane
• OEIS programs   Antti Karttunen
• Request for more Python programs   Jaap Spies
• A001013, A025487   David Wilson
• A001013, A025487   David Wilson
• Help Needed   Jonathan Post
• Iterating A066136   Jonathan Post
• Request for more Python programs   Alec Mihailovs
• [OEIS] Python-development. Was: Request for more Python programs   Antti Karttunen
• Ofssets in OEIS: Was: [OEIS] Python-dvlpmnt. Was: Request for..   zak seidov
• Help Needed - "Semi-lucky" numbers - imag. quadratic fields w/ class number 2   Gerald McGarvey
• [OEIS] Python-development. Was: Request for more Python programs   Antti Karttunen
• Iterating A066136   Jonathan Post
• Help Needed   Artur
• Help Needed   Artur
• 2007 fun   Ed Pegg Jr
• 2007 fun   Rainer Rosenthal
• [OEIS] Python-development. Was: Request for more Python programs   N. J. A. Sloane
• 2007 fun   Nick Hobson
• Iterating A066136   Jonathan Post
• 2007 fun   Jonathan Post
• Primes classification   Artur
• 2007 fun   Rainer Rosenthal
• 2007 fun   Edwin Clark
• Linear cost addition chains (somewhat long)   franktaw at netscape.net
• puzzle family: values of parenthesized expressions   Marc LeBrun
• puzzle family: values of parenthesized expressions   Antti Karttunen
• Primes classification   Max A.
• Python Development   Jon Awbrey
• Primes classification   Artur
• Conjectures 111-113 from "100 Conjectures from the OEIS"   Max A.
• Does this sequence finite and complete?   Artur
• Python Development, memoized functions.   Antti Karttunen
• Python Development, memoized functions.   Antti Karttunen
• Near Integers   Artur
• A108571: Total number of terms   Antti Karttunen
• Python-development   Don Reble
• Request for more Python programs   Jaap Spies
• Near Integers   N. J. A. Sloane
• Near Integers   Max A.
• Near Integers   Artur
• 37   Artur
• conjecture   Artur
• Python Development, memoized functions.   Alec Mihailovs
• Python Development, memoized functions.   Antti Karttunen
• Python Development, memoized functions.   Alec Mihailovs
• Python Development, memoized functions.   Alec Mihailovs
• Near Integers   franktaw at netscape.net
• Python Development, memoized functions.   Antti Karttunen
• Request for more Python programs   Alec Mihailovs
• Python Development, memoized functions.   Alec Mihailovs
• Python Development, memoized functions.   Antti Karttunen
• Python Development, memoized functions.   Alec Mihailovs
• A005892: Truncated square numbers?   Zakir Seidov
• A005892: Truncated square numbers?   Max A.
• Conjectures 111-113 from "100 Conjectures from the OEIS"   Ralf Stephan
• A005892: Truncated square numbers?   N. J. A. Sloane
• A005892: Truncated square numbers?   N. J. A. Sloane
• Python Development, memoized functions.   Alec Mihailovs
• Near Integers   Artur
• Near Integers   Artur
• Python Development, memoized functions.   Jaap Spies
• Conjectures 111-113 from "100 Conjectures from the OEIS"   Max A.
• Python Development, memoized functions   Jon Awbrey
• Conjectures 111-113 from "100 Conjectures from the OEIS"   Tanya Khovanova
• Conjectures 111-113 from "100 Conjectures from the OEIS"   Antti Karttunen
• Conjectures 111-113 from "100 Conjectures from the OEIS"   Ralf Stephan
• Extending A066951 to a(7) = 70   Jonathan Post
• Conjectures 111-113 from "100 Conjectures from the OEIS". Correction.   Antti Karttunen
• Python Development, memoized functions.   franktaw at netscape.net
• Conjectures 111-113 from "100 Conjectures from the OEIS". Second part.   Antti Karttunen
• Conjectures 111-113. Smaller counter-example for the second part.   Antti Karttunen
• Conjectures 111-113 from "100 Conjectures from the OEIS". Correction.   David Wilson
• Multiply Then Add = Primes, Composites   Leroy Quet
• Conjectures 111-113. Smaller counter-example for the second part.   David Wilson
• Multiply Then Add = Primes, Composites   Edwin Clark
• Conjectures 111-113 from "100 Conjectures from the OEIS". Correction.   Antti Karttunen
• New sequences with A numbers (for endofunctions)   Jonathan Post
• Q. about {0,1}-matrices.   N. J. A. Sloane
• Divisor   koh
• Python Development, memoized functions.   Alec Mihailovs
• "chiral" polyominoes   Graeme McRae
• Multiply Then Add = Primes, Composites   Artur
• Conjectures 111-113. Smaller counter-example for the second part.   Ralf Stephan
• Conjectures 111-113. Smaller counter-example for the second part.   Antti Karttunen
• First, second, third... differences   Eric Angelini
• Multiply Then Add = Primes, Composites   Peter Pein
• "chiral" polyominoes   Jonathan Post
• Logical Graphs   Jon Awbrey
• Conjectures 111-113 from "100 Conjectures from the OEIS"   David Wilson
• More conjectures?   Antti Karttunen
• Q. about {0,1}-matrices.   Artur
• Conjectures 111-113 from "100 Conjectures from the OEIS"   David Wilson
• Q. about {0,1}-matrices.   Artur
• A125588: a(n)/a(n-1) =>> 2.01145 (?)   Zakir Seidov
• First, second, third... differences (corrected)   Eric Angelini
• Q. about {0,1}-matrices.   Ferenc Adorjan
• Mathematical Proof on " Essentially the same as"   Artur
• Q. about {0,1}-matrices.   Edwin Clark
• First, second, third... differences (corrected)   zak seidov
• Q. about {0,1}-matrices.   Brendan McKay
• Q. about {0,1}-matrices.   Artur
• Q. about {0,1}-matrices.   Klaus Brockhaus
• Q. about {0,1}-matrices.   Brendan McKay
• Q. about {0,1}-matrices.   Peter Pein
• Q. about {0,1}-matrices.   Artur
• Q. about {0,1}-matrices.   N. J. A. Sloane
• Q. about {0,1}-matrices.   Brendan McKay
• Q. about {0,1}-matrices.   Edwin Clark
• [math-fun] Re: Car Talk and prime numbers   David Wilson
• Q. about {0,1}-matrices.   Klaus Brockhaus
• Python Development, memoized, "lazy" functions   Antti Karttunen
• More conjectures!   Ralf Stephan
• Mathematical Proof on " Essentially the same as"   Ralf Stephan
• More conjectures!   Ralf Stephan
• Car Talk and prime numbers   zak seidov
• Q. about {0,1}-matrices.   Artur
• Q. about {0,1}-matrices.   N. J. A. Sloane
• Multiply Then Add, Smallest Possible Integer   Leroy Quet
• Multiply Then Add, Smallest Possible Integer   zak seidov
• a(n-2) | (a(n)+a(n-1)): only primes   Peter Pein
• a(n-2) | (a(n)+a(n-1)): only primes   Antti Karttunen
• a(n-2) | (a(n)+a(n-1)): only primes   Antti Karttunen
• Second _absolute_ differences   Eric Angelini
• Multiply Then Add, Smallest Possible Integer   Peter Pein
• RE : Second _absolute_ differences   Eric Angelini
• More conjectures!   David Wilson
• a(n-2) | (a(n)+a(n-1)): only primes   Peter Pein
• a(n-2) | (a(n)+a(n-1)): only primes   zak seidov
• a(n-2) | (a(n)+a(n-1)): only primes   Peter Pein
• numerators   Artur
• Number of matrices n x n with n^2 different elements which have that same characteristic polynomial   Artur
• Primes p such that x = order(x) modulo p   Nick Hobson
• Q. about {0,1}-matrices.   Jonathan Post
• Q. about {0,1}-matrices.   Artur
• Q. about {0,1}-matrices.   Artur
• Q. about {0,1}-matrices.   Artur
• Q. about {0,1}-matrices.   N. J. A. Sloane
• number of binary trees of height equal to or less than n   Jonathan Post
• question about {0,1}-matrices   Jon Awbrey
• question about {0,1}-matrices   Jonathan Post
• question about {0,1}-matrices   Jon Awbrey
• Multiply Then Add, Smallest Possible Integer   Leroy Quet
• SeqFan Withdrawal.   Antti Karttunen
• Primes p such that x = order(x) modulo p   Max A.
• Number of matrices n x n with n^2 different elements which have that same characteristic polynomial   Max A.
• Number of matrices n x n with n^2 different elements which have that same characteristic polynomial   Artur
• SeqFan Withdrawal.   Hugo Pfoertner
• Number of matrices n x n with n^2 different elements which have that same characteristic polynomial   Max A.
• Minimal graphs for groups   franktaw at netscape.net
• deletable primes   Joshua Zucker
• connected components in subgraphs of the complete graph: A125205 - A125207   Max A.
• Maple program for A005146 and A005147   Rainer Rosenthal
• succesive natural numbers as records   Artur
• array T(k,n) = n-th composite coprime to k, read by antidiagonals   Jonathan Post
• array T(k,n) = n-th composite coprime to k, read by antidiagonals   Jaap Spies
• array T(k,n) = n-th composite coprime to k, read by antidiagonals   Jonathan Post
• array T(k,n) = n-th composite coprime to k, read by antidiagonals   Marc LeBrun
• Conjectures 111-113 from "100 Conjectures from the OEIS"   Max A.
• comments on A001835, A004253, A001653   Tanya Khovanova
• Difference   koh
• Difference   franktaw at netscape.net
• comments on A001835, A004253, A001653   David Wasserman
• Adieu (fwd)   Richard Guy
• Adieu (fwd)   Jonathan Post
• adieu   Jon Awbrey
• Adieu (fwd)   Henry Gould
• Adieu (fwd)   Jaap Spies
• Adieu (fwd)   David Wilson
• A seqfan forum...   Gordon Royle
• A seqfan forum...   Gordon Royle
• A seqfan forum...   Tanya Khovanova
• A seqfan forum...   Joshua Zucker
• use the right software Re: A seqfan forum...   Ralf Stephan
• advantages of gmane over google groups   Jon Awbrey
• comments on A001835, A004253, A001653   Mitch Harris
• A seqfan forum...   Leroy Quet
• advantages of gmane over google groups   franktaw at netscape.net
• advantages of gmane over google groups   Jon Awbrey
• A seqfan forum...   Max A.
• A seqfan forum...   Richard Guy
• A seqfan forum...   franktaw at netscape.net
• A seqfan forum...   Jaap Spies
• [seqfan] Message from the Administrator   Olivier Gerard
• Joe Crump's Number Theory website is back ;-)   Max A.
• A081018: Pythagorean triple interpretation   Nick Hobson
• Sequence related to figurate numbers   Andrew Plewe
• Sequence related to figurate numbers   Andrew Plewe
• A071848   David Wilson
• Number of matrices n x n with n^2 different elements which have that same characteristic polynomial   Artur
• Number of matrices n x n with n^2 different elements which have that same characteristic polynomial   Max A.
• Geometric/arithmetic progression of divisor, quotient, remainder   Nick Hobson
• Number of matrices n x n with n^2 different elements which have that same characteristic polynomial   Brendan McKay
• adieu - another possible solution: a forum   Gerald McGarvey
• Geometric/arithmetic progression of divisor, quotient, remainder   Max A.
• A091352 - Formula Anyone? - Number of Terms in Rows   Paul D. Hanna
• adieu - My apologies   Gerald McGarvey
• Geometric/arithmetic progression of divisor, quotient, remainder   Max A.
• Quickest procedure needed   Artur
• Quickest procedure needed   Jonathan Sondow
• Pythagorean Triples   zak seidov
• Primes with initial digits - errors   franktaw at netscape.net
• Primes with initial digits - errors   Don Reble
• Primes with initial digits - errors   Ray Chandler
• A001524   David Wilson
• A001524   franktaw at netscape.net
• deletable primes   Ray Chandler
• (a(1)+a(2)+..a(n)) divides a(1)*a(2)*..a(n)   Leroy Quet
• Root of polynomial of 124 degree is giving 194 succcessive primes   Artur
• Primes of the form 4p+3, where p are primes of the form 4q+3...   Zakir Seidov
• Add and write sequence   Eric Angelini
• primes less than n and relatively prime to n   Artur
• primes less than n and relatively prime to n   Joshua Zucker
• A005361(A005361(n)) > 1   Jonathan Post
• primes less than n and relatively prime to n   Artur
• 3D analogue of A124278   Jonathan Post
• primes less than n and relatively prime to n   zak seidov
• primes less than n and relatively prime to n   Jonathan Post
• primes less than n and relatively prime to n   Hans Havermann
• primes less than n and relatively prime to n--please folks!   Marc LeBrun
• [n/2] + [n/3] + [n/5], etc.   Marc LeBrun
• primes less than n and relatively prime to n--please folks!   Marc LeBrun
• A002385(A002385(n))   Jonathan Post
• q-Analog of Pi - Evaluate at q=2, ... ?   Paul D. Hanna
• Coprimes and first differences   Eric Angelini
• (a(1)+a(2)+..a(n)) divides a(1)*a(2)*..a(n)   Leroy Quet
• (a(1)+a(2)+..a(n)) divides a(1)*a(2)*..a(n)   Hans Havermann
• 2^n = 3 (mod n) : New solution: 10991007971508067   Rainer Rosenthal
• Bernoulli-Identity and related sequences   Gottfried Helms
• 2^n = 3 (mod n) : New solution: 10991007971508067   Max A.
• SENSigma   koh
• Various OEIS items, Jan 23 2007   N. J. A. Sloane
• Does this sequence finite and complete?   Max Alekseyev
• Arithmetic progression of 24 primes   Hugo Pfoertner
• Linear cost addition chains   franktaw at netscape.net
• Duplicate sequences with error   franktaw at netscape.net
• A transform of   Gottfried Helms
• A034962 and A050207 can't both be correct   Jonathan Post
• A034962 and A050207 can't both be correct   Max Alekseyev
• A034962 and A050207 can't both be correct   Artur
• Re Primes with initial digits - errors: one seq. left to check   N. J. A. Sloane
• Re Primes with initial digits - errors: one seq. left to check   Jacques Tramu
• strict partitions into catalans and powers of 3   wouter meeussen
• A034962 and A050207 can't both be correct   Joshua Zucker
• Re Primes with initial digits - errors: one seq. left to check   Dan Dima
• A034962 and A050207 can't both be correct   Artur
• A034962 and A050207 can't both be correct   Joshua Zucker
• 2^n = 3 (mod n) : New solution: 10991007971508067   Max Alekseyev
• gcd(n,2^(2n^2)-2) is usually 1 or 2   Joshua Zucker
• gcd(n,2^(2n^2)-2) is usually 1 or 2   Max Alekseyev
• [math-fun] New proof of Euclid's Theorem   Don Reble
• strict partitions into catalans and powers of 3   Roland Bacher
• modeling trochea and lunks   N. J. A. Sloane
• Re Primes with initial digits - errors: one seq. left to check   Martin Fuller
• strict partitions into catalans and powers of 3   Meeussen Wouter (bkarnd)
• Lenormand concatenated words on alphabet (x,y)   Eric Angelini
• Lenormand concatenated words on alphabet (x,y)   reismann at free.fr
• Lenormand concatenated words on alphabet (x,y)   Christian G. Bower
• The Human Metabolome Database   N. J. A. Sloane
• Smallest square-free k-gonal number with n prime factors   Andrew Plewe

Last message date: Wed Jan 31 21:16:49 CET 2007
Archived on: Sun Jan 15 12:28:03 CET 2023

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