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.

A203268 G.f.: A(x) = exp( Sum_{n>=1} G_n(x^n)^3 * x^n/n ) such that G_n(x^n) = Product_{k=0..n-1} A(u^k*x) where u is an n-th root of unity.

Table of values

n a(n)
0 1
1 1
2 4
3 19
4 116
5 683
6 4818
7 31126
8 232058
9 1598611
10 12315375
11 86887285
12 695017086
13 4999457900
14 40344295044
15 298468091712
16 2434392979661
17 18077507384936
18 150454415661096
19 1125745880242406
20 9386869540033292
21 71518155964958242
22 597727034006054509

List of values

[1, 1, 4, 19, 116, 683, 4818, 31126, 232058, 1598611, 12315375, 86887285, 695017086, 4999457900, 40344295044, 298468091712, 2434392979661, 18077507384936, 150454415661096, 1125745880242406, 9386869540033292, 71518155964958242, 597727034006054509]