August 2007 Archives by author

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Starting: Wed Aug 1 03:06:51 CEST 2007
Ending: Fri Aug 31 19:08:56 CEST 2007
Messages: 89

• possibly wrong comment with Motzkin numbers   Max Alekseyev
• Sequence abundent in primes   Max Alekseyev
• Concatenate a and b, get c = floor ab/b, concatenate b and c, etc.   Max Alekseyev
• Problem concerned with A018819   Max Alekseyev
• Primes that are sums of eighth powers of two distinct primes.   Max Alekseyev
• G.f. for a(n) = C(2n,n)*Sum_{k=0..2n} T(n,k)/C(2n,k) ?   Max Alekseyev
• G.f. for a(n) = C(2n,n)*Sum_{k=0..2n} T(n,k)/C(2n,k) ?   Max Alekseyev
• G.f. for a(n) = C(2n,n)*Sum_{k=0..2n} T(n,k)/C(2n,k) ?   Max Alekseyev
• G.f. for a(n) = C(2n,n)*Sum_{k=0..2n} T(n,k)/C(2n,k) ?   Max Alekseyev
• Triangle T(n,k) = [x^(k*2^(n-1))] Product_{i=0..n-1} (1 + x^(2^i))^(2^(n-i-1))   Max Alekseyev
• A conjecture   Max Alekseyev
• Partition into strokes   Max Alekseyev
• Chestnut   Max Alekseyev
• Extend A131792 ?   Max Alekseyev
• Concatenate a and b, get c = floor ab/b, concatenate b and c, etc.   Eric Angelini
• Previous term + quantity of digits   Eric Angelini
• Previous term + quantity of digits   Eric Angelini
• Terms share no digit with their difference   Eric Angelini
• Terms share no digit with their difference (2)   Eric Angelini
• RE : Terms share no digit with their difference (2)   Eric Angelini
• Weak Skolem-Langford integers   Eric Angelini
• Catalan-like array with digits   Eric Angelini
• Catalan-like array with digits   Eric Angelini
• Base-10 Skolem-Langford numbers   Eric Angelini
• Base-10 Skolem-Langford numbers   Eric Angelini
• possibly wrong comment with Motzkin numbers   Joerg Arndt
• server down [was: Re: G.f. for a(n) = ...]   Joerg Arndt
• That same   Artur
• [Fwd: coefficients of Moonshine (McKay-Thompson) series]   Jon Awbrey
• Terms share no digit with their difference (2)   Jack Brennen
• Terms share no digit with their difference (2)   Jack Brennen
• Terms share no digit with their difference   Jack Brennen
• Primes that are sums of eighth powers of two distinct primes.   Ignacio Larrosa Cañestro
• Extend A131792 ?   Martin Fuller
• G.f. for a(n) = C(2n,n)*Sum_{k=0..2n} T(n,k)/C(2n,k) ?   Paul D. Hanna
• G.f. for a(n) = C(2n,n)*Sum_{k=0..2n} T(n,k)/C(2n,k) ?   Paul D. Hanna
• G.f. for a(n) = C(2n,n)*Sum_{k=0..2n} T(n,k)/C(2n,k) ?   Paul D. Hanna
• A006906 question   Paul D. Hanna
• Triangle T(n,k) = [x^(k*2^(n-1))] Product_{i=0..n-1} (1 + x^(2^i))^(2^(n-i-1))   Paul D. Hanna
• Little problem   Mitch Harris
• Base-10 Skolem-Langford numbers   Hans Havermann
• Numbers whose squares start with 4 identical digits, with 5, with 6...   Hans Havermann
• Numbers whose squares start with 4 identical digits, with 5, with 6...   Hans Havermann
• decode sequence   Gottfried Helms
• decode sequence   Gottfried Helms
• A006906 question   Dean Hickerson
• Base-10 Skolem-Langford numbers   Dean Hickerson
• Problem concerned with A018819   Vladeta Jovovic
• Compositions into parts with even multiplicities   Vladeta Jovovic
• A conjecture   Vladeta Jovovic
• Catalan-like array with digits   Marc LeBrun
• Primes that are sums of eighth powers of two distinct primes.   Jonathan Post
• Primes that are sums of eighth powers of two distinct primes.   Jonathan Post
• Primes that are sums of eighth powers of two distinct primes.   Jonathan Post
• Numbers whose squares start with 4 identical digits, with 5, with 6...   Jonathan Post
• Numbers whose squares start with 4 identical digits, with 5, with 6...   Jonathan Post
• 2 questions: kth +integer which is coprime to j   Leroy Quet
• A061762 a(n) = (sum of digits of n) + (product of digits of n).   Giovanni Resta
• Diophantine equation: x^2 - p*y^2 = -4   Warut Roonguthai
• Little problem   Warut Roonguthai
• Conjecture in A103200 settled   Rainer Rosenthal
• Permutations   Gordon Royle
• Conjectured formula for A004081 from Jon Schoenfield   N. J. A. Sloane
• [Fwd: coefficients of Moonshine (McKay-Thompson) series]   N. J. A. Sloane
• OEIS is back up   N. J. A. Sloane
• Conjecture in A103200 settled   N. J. A. Sloane
• A061762 a(n) = (sum of digits of n) + (product of digits of n).   N. J. A. Sloane
• Partition into strokes   N. J. A. Sloane
• no updates to OEIS until mid-September   N. J. A. Sloane
• 2 questions: kth +integer which is coprime to j   Stefan Steinerberger
• Conjecture in A103200 settled   Ralf Stephan
• Little problem   David Wilson
• Fw: Extending A053169?   David Wilson
• A006906 question   David Wilson
• A006906 question   David Wilson
• A006906 question   David Wilson
• Terms share no digit with their difference   hv at crypt.org
• 2 questions: kth +integer which is coprime to j   hv at crypt.org
• 2 questions: kth +integer which is coprime to j   hv at crypt.org
• first child - next sibling   deutsch
• Problem concerned with A018819   franktaw at netscape.net
• Power residue counting   franktaw at netscape.net
• A130232: correction   zak seidov
• A130399 : correction   zak seidov
• A132281   zak seidov
• A061762 a(n) = (sum of digits of n) + (product of digits of n).   zak seidov
• A061762 a(n) = (sum of digits of n) + (product of digits of n).   zak seidov
• A130876: k>1   zak seidov
• A130876: k>1: A130876's dead   zak seidov

Last message date: Fri Aug 31 19:08:56 CEST 2007
Archived on: Sun Jan 15 12:28:08 CET 2023

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