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.

A381875 G.f. A(x) satisfies A(x) = C(x) / (1 - x*A(x))^2, where C(x) is the g.f. of A000108.

Table of values

n a(n)
0 1
1 3
2 13
3 66
4 368
5 2185
6 13570
7 87147
8 574241
9 3861286
10 26390591
11 182798850
12 1280387583
13 9053335674
14 64534088960
15 463249047099
16 3345832486407
17 24296575830677
18 177286818019264
19 1299208549351640
20 9557974679439901
21 70563100013789595
22 522608148884843970

List of values

[1, 3, 13, 66, 368, 2185, 13570, 87147, 574241, 3861286, 26390591, 182798850, 1280387583, 9053335674, 64534088960, 463249047099, 3345832486407, 24296575830677, 177286818019264, 1299208549351640, 9557974679439901, 70563100013789595, 522608148884843970]