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.

A179442 a(n) = ((n-1)! * (n+1)!) / n.

Table of values

n a(n)
1 2
2 3
3 16
4 180
5 3456
6 100800
7 4147200
8 228614400
9 16257024000
10 1448500838400
11 158018273280000
12 20713561989120000
13 3212195459235840000
14 581636820654489600000
15 121600871304831959040000

List of values

[2, 3, 16, 180, 3456, 100800, 4147200, 228614400, 16257024000, 1448500838400, 158018273280000, 20713561989120000, 3212195459235840000, 581636820654489600000, 121600871304831959040000]

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

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