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.

A370023 Expansion of g.f. A(x) satisfying Sum_{n=-oo..+oo} (-1)^n * (x^n + 3*A(x))^n = 1 + 5*Sum_{n>=1} (-1)^n * x^(n^2).

Table of values

n a(n)
1 1
2 3
3 12
4 53
5 234
6 1041
7 4711
8 21573
9 99484
10 461657
11 2154591
12 10102701
13 47555840
14 224624016
15 1064183887
16 5055060411
17 24068888061
18 114841741098
19 548992775523
20 2628924592737
21 12608597616161
22 60558351876803
23 291238387762452
24 1402314223189959
25 6759651098793285
26 32617445956236720

List of values

[1, 3, 12, 53, 234, 1041, 4711, 21573, 99484, 461657, 2154591, 10102701, 47555840, 224624016, 1064183887, 5055060411, 24068888061, 114841741098, 548992775523, 2628924592737, 12608597616161, 60558351876803, 291238387762452, 1402314223189959, 6759651098793285, 32617445956236720]