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.

A131705 Phi(binomial(2*n,n)*n^3).

Table of values

n a(n)
0 0
1 1
2 16
3 144
4 1536
5 7200
6 51840
7 282240
8 1474560
9 7464960
10 55296000
11 200724480
12 1051066368
13 6167715840
14 21459271680
15 114960384000
16 523197480960
17 2214903398400
18 9311791104000
19 41500698624000
20 183936614400000

List of values

[0, 1, 16, 144, 1536, 7200, 51840, 282240, 1474560, 7464960, 55296000, 200724480, 1051066368, 6167715840, 21459271680, 114960384000, 523197480960, 2214903398400, 9311791104000, 41500698624000, 183936614400000]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.