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.

A326423 G.f. A(x) satisfies: Sum_{n>=0} A(x)^(n*(n+1)/2) * x^n = Sum_{n>=0} x^n / (1-x)^(n*(n-1)/2).

Table of values

n a(n)
0 1
1 0
2 1
3 1
4 4
5 11
6 39
7 147
8 598
9 2577
10 11669
11 55156
12 270938
13 1378577
14 7247494
15 39290662
16 219304105
17 1258592815
18 7418414658
19 44863100701
20 278117328554
21 1765909629266
22 11475651209600
23 76267987517000
24 518046275820877
25 3593989140928928
26 25450794447346211
27 183860936257142088
28 1354254148649619126
29 10164913983190913353
30 77710718331267769117

List of values

[1, 0, 1, 1, 4, 11, 39, 147, 598, 2577, 11669, 55156, 270938, 1378577, 7247494, 39290662, 219304105, 1258592815, 7418414658, 44863100701, 278117328554, 1765909629266, 11475651209600, 76267987517000, 518046275820877, 3593989140928928, 25450794447346211, 183860936257142088, 1354254148649619126, 10164913983190913353, 77710718331267769117]