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.

A190790 G.f. satisfies: A(x) = 1 + Sum_{n>=1} q^(2n-1)/(1 - q^(2n-1)) where q = x*A(x).

Table of values

n a(n)
0 1
1 1
2 2
3 6
4 18
5 58
6 198
7 696
8 2506
9 9205
10 34344
11 129792
12 495834
13 1911640
14 7428444
15 29064650
16 114404410
17 452719183
18 1799994588
19 7187148262
20 28807364008
21 115865980972
22 467497031164
23 1891710323324
24 7675031497682
25 31215088847239

List of values

[1, 1, 2, 6, 18, 58, 198, 696, 2506, 9205, 34344, 129792, 495834, 1911640, 7428444, 29064650, 114404410, 452719183, 1799994588, 7187148262, 28807364008, 115865980972, 467497031164, 1891710323324, 7675031497682, 31215088847239]