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.

A092186 a(n) = 2(m!)^2 for n = 2m and m!(m+1)! for n = 2m+1.

Table of values

n a(n)
0 2
1 1
2 2
3 2
4 8
5 12
6 72
7 144
8 1152
9 2880
10 28800
11 86400
12 1036800
13 3628800
14 50803200
15 203212800
16 3251404800
17 14631321600
18 263363788800
19 1316818944000
20 26336378880000
21 144850083840000
22 3186701844480000
23 19120211066880000
24 458885065605120000
25 2982752926433280000

List of values

[2, 1, 2, 2, 8, 12, 72, 144, 1152, 2880, 28800, 86400, 1036800, 3628800, 50803200, 203212800, 3251404800, 14631321600, 263363788800, 1316818944000, 26336378880000, 144850083840000, 3186701844480000, 19120211066880000, 458885065605120000, 2982752926433280000]

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

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