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.

A226045 G.f.: ( Sum_{n>=0} (2*n+x)^n * x^n / (1 + 2*n*x + x^2)^n )^(1/2).

Table of values

n a(n)
0 1
1 1
2 6
3 44
4 430
5 5162
6 72890
7 1178978
8 21449704
9 433116488
10 9606793874
11 232145293502
12 6070097785376
13 170763070370848
14 5142963967765530
15 165115679014587758
16 5629558857460143814
17 203146937778126705662
18 7735490130309647256862

List of values

[1, 1, 6, 44, 430, 5162, 72890, 1178978, 21449704, 433116488, 9606793874, 232145293502, 6070097785376, 170763070370848, 5142963967765530, 165115679014587758, 5629558857460143814, 203146937778126705662, 7735490130309647256862]