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.

A181201 a(n) = 0!*1!*2!*(3*n)!*3*n*(n-1) / ((n)!*(n+1)!*(n+2)!).

Table of values

n a(n)
1 0
2 30
3 756
4 16632
5 360360
6 7876440
7 174594420
8 3926434512
9 89492111280
10 2064420294300
11 48134517631200
12 1133012491934400
13 26895067957892160
14 643240375326254160
15 15487976684184750900
16 375182135475713517600

List of values

[0, 30, 756, 16632, 360360, 7876440, 174594420, 3926434512, 89492111280, 2064420294300, 48134517631200, 1133012491934400, 26895067957892160, 643240375326254160, 15487976684184750900, 375182135475713517600]