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.

A245156 G.f.: Sum_{n>=0} x^n/((1+x)^(2*n)*(1 - (2*n)*x)).

Table of values

n a(n)
0 1
1 1
2 1
3 4
4 13
5 51
6 234
7 1205
8 6861
9 42696
10 287893
11 2088343
12 16195822
13 133582909
14 1166593665
15 10746339324
16 104072482781
17 1056515903547
18 11213782563474
19 124152537651877
20 1430804512710901
21 17131971790847440
22 212761333257548485
23 2736258689605227615
24 36389676240341831766

List of values

[1, 1, 1, 4, 13, 51, 234, 1205, 6861, 42696, 287893, 2088343, 16195822, 133582909, 1166593665, 10746339324, 104072482781, 1056515903547, 11213782563474, 124152537651877, 1430804512710901, 17131971790847440, 212761333257548485, 2736258689605227615, 36389676240341831766]