User Notamathematician

3 votes

1 answer

296 views

Sum with products turned into subsequences

asked Nov 16, 2021 at 10:01

3 votes

0 answers

151 views

Combinatorial interpretation of inverse modulo $2$ binomial transform of A284005

asked Nov 17, 2021 at 14:30

3 votes

0 answers

97 views

Identical digits at the end of adjacent terms of the sequence

asked Nov 1, 2021 at 14:52

3 votes

1 answer

193 views

Sequences that sums up to second differences of Bell and Catalan numbers

asked Nov 4, 2021 at 17:32

3 votes

2 answers

458 views

Subsequence of the cubes

asked Sep 16, 2021 at 15:39

3 votes

0 answers

124 views

Oscillator in Langton's ant

asked Sep 23, 2021 at 10:36

3 votes

0 answers

88 views

Recursion for reversed rows of the A373183 using unsigned Stirling numbers of the first kind

asked Jun 12 at 15:15

3 votes

0 answers

129 views

Sequence that sums up to A014307

asked Jul 11 at 12:13

3 votes

0 answers

128 views

Fast and simple algorithm for the A329369

asked May 22 at 13:08

3 votes

0 answers

70 views

$R$-recursion for the A249833 (similar to A235129)

asked Dec 24, 2023 at 12:41

3 votes

0 answers

69 views

Sequence that sum up to A343685

asked Aug 16, 2023 at 15:13

3 votes

0 answers

121 views

Closed form from a slightly modified recursion for transposed Catalan triangle

asked Aug 30, 2023 at 12:50

3 votes

0 answers

120 views

Sequence which is related to the binary expansion of $n$ and partition numbers

asked Oct 9, 2023 at 12:04

3 votes

1 answer

468 views

Generalized harmonic numbers and Riemann zeta function

asked Jan 10 at 14:20

3 votes

1 answer

238 views

Partition numbers and Gaussian binomial coefficient

asked Feb 12 at 12:29

3 votes

1 answer

178 views

Algorithm for the sum with binomial coefficients and Bell numbers

asked Sep 7 at 12:53

3 votes

0 answers

165 views

Elegant algorithm for A140717

asked Aug 23 at 9:57

3 votes

1 answer

140 views

$R$-recursion for unsigned Genocchi numbers (of first kind) of even index

asked Jul 27 at 12:05

2 votes

2 answers

315 views

5 different ways to define the same family of integer sequences

asked Aug 1 at 7:52

2 votes

0 answers

64 views

On a $\sum\limits_{n=0}^{\infty}c_n x^n=\sum\limits_{n=0}^{\infty}a(n)x^n\prod\limits_{k=1}^{n+1}(1-f(k)x^k)$ (slightly different question)

asked Aug 21 at 13:15

2 votes

1 answer

311 views

Generating function for A300483 (related to Chebyshev polynomial of first kind)

asked Sep 9 at 13:08

2 votes

0 answers

46 views

On A088352 as an antidiagonal sums of A129179

asked Sep 14 at 9:25

2 votes

0 answers

62 views

Algorithm for main diagonal of integer coefficients associated with Schroeder numbers

asked Sep 17 at 8:27

2 votes

0 answers

51 views

Recursion for A129179 similar to recursion for Pascal's triangle

asked Sep 26 at 16:25

2 votes

0 answers

113 views

Numbers of positive terms in polynomials equal A069999

asked Oct 13 at 13:41

2 votes

0 answers

126 views

Generalized identity with Stirling numbers of the second kind and falling factorials

asked Dec 7 at 11:57

2 votes

0 answers

59 views

$R$-recursion for A338193

asked Oct 30 at 15:45

2 votes

0 answers

67 views

$R$-recursion for A006351

asked Nov 2 at 13:17

2 votes

0 answers

182 views

Algorithm for $\frac{1}{1-x} = \sum\limits_{n=0}^{\infty}a(n)x^n\prod\limits_{k=1}^{n}\frac{1-kx}{1+kx}$

asked Nov 10 at 15:41

2 votes

0 answers

72 views

Possible subsequence of the A110978

asked Feb 17 at 16:14

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185 Questions

Sum with products turned into subsequences

Combinatorial interpretation of inverse modulo $2$ binomial transform of A284005

Identical digits at the end of adjacent terms of the sequence

Sequences that sums up to second differences of Bell and Catalan numbers

Subsequence of the cubes

Oscillator in Langton's ant

Recursion for reversed rows of the A373183 using unsigned Stirling numbers of the first kind

Sequence that sums up to A014307

Fast and simple algorithm for the A329369

$R$-recursion for the A249833 (similar to A235129)

Sequence that sum up to A343685

Closed form from a slightly modified recursion for transposed Catalan triangle

Sequence which is related to the binary expansion of $n$ and partition numbers

Generalized harmonic numbers and Riemann zeta function

Partition numbers and Gaussian binomial coefficient

Algorithm for the sum with binomial coefficients and Bell numbers

Elegant algorithm for A140717

$R$-recursion for unsigned Genocchi numbers (of first kind) of even index

5 different ways to define the same family of integer sequences

On a $\sum\limits_{n=0}^{\infty}c_n x^n=\sum\limits_{n=0}^{\infty}a(n)x^n\prod\limits_{k=1}^{n+1}(1-f(k)x^k)$ (slightly different question)

Generating function for A300483 (related to Chebyshev polynomial of first kind)

On A088352 as an antidiagonal sums of A129179

Algorithm for main diagonal of integer coefficients associated with Schroeder numbers

Recursion for A129179 similar to recursion for Pascal's triangle

Numbers of positive terms in polynomials equal A069999

Generalized identity with Stirling numbers of the second kind and falling factorials

$R$-recursion for A338193

$R$-recursion for A006351

Algorithm for $\frac{1}{1-x} = \sum\limits_{n=0}^{\infty}a(n)x^n\prod\limits_{k=1}^{n}\frac{1-kx}{1+kx}$

Possible subsequence of the A110978