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.

A006335 a(n) = 4^n*(3*n)!/((n+1)!*(2*n+1)!).

Table of values

n a(n)
0 1
1 2
2 16
3 192
4 2816
5 46592
6 835584
7 15876096
8 315031552
9 6466437120
10 136383037440
11 2941129850880
12 64614360416256
13 1442028424527872
14 32619677465182208
15 746569714888605696
16 17262927525017812992
17 402801642250415636480
18 9474719710174783733760
19 224477974671833337692160

List of values

[1, 2, 16, 192, 2816, 46592, 835584, 15876096, 315031552, 6466437120, 136383037440, 2941129850880, 64614360416256, 1442028424527872, 32619677465182208, 746569714888605696, 17262927525017812992, 402801642250415636480, 9474719710174783733760, 224477974671833337692160]