cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A249934 G.f. A(x) satisfies: x = Sum_{n>=1} 1/A(x)^(3*n) * Product_{k=1..n} (1 - 1/A(x)^(2*k-1)).

Table of values

n a(n)
0 1
1 1
2 1
3 4
4 19
5 107
6 671
7 4600
8 34218
9 276415
10 2439426
11 23724674
12 256361107
13 3091554768
14 41560590331
15 618957882104
16 10119509431084
17 179887355572358
18 3446915545155744
19 70686674091569072
20 1542478858735415921
21 35650141769790146478
22 869385516566240903091
23 22299067147713040916568

List of values

[1, 1, 1, 4, 19, 107, 671, 4600, 34218, 276415, 2439426, 23724674, 256361107, 3091554768, 41560590331, 618957882104, 10119509431084, 179887355572358, 3446915545155744, 70686674091569072, 1542478858735415921, 35650141769790146478, 869385516566240903091, 22299067147713040916568]