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.

A181167 G.f.: 1 = Sum_{n>=0} a(n)*x^n* Sum_{k>=0} C(2n+k,k)^2*(-x)^k.

Table of values

n a(n)
0 1
1 1
2 8
3 165
4 6384
5 397320
6 36273600
7 4566166605
8 757975618400
9 160424015864112
10 42164387189608320
11 13473505313334666600
12 5144136790654611953280
13 2312696796696904699224000
14 1209297981696245764641077760
15 727688337054213932985609546525

List of values

[1, 1, 8, 165, 6384, 397320, 36273600, 4566166605, 757975618400, 160424015864112, 42164387189608320, 13473505313334666600, 5144136790654611953280, 2312696796696904699224000, 1209297981696245764641077760, 727688337054213932985609546525]