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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.

A365990 Expansion of e.g.f. 1 / ( 1 - Sum_{k>=0} x^(5*k+4) / (5*k+4) ).

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 6
5 0
6 0
7 0
8 2520
9 40320
10 0
11 0
12 7484400
13 345945600
14 6227020800
15 0
16 81729648000
17 7410154752000
18 307697854464000
19 6402373705728000
20 2375880867360000
21 354798209525760000
22 25460995321681920000
23 1090665702016450560000
24 26003493399464380800000

List of values

[1, 0, 0, 0, 6, 0, 0, 0, 2520, 40320, 0, 0, 7484400, 345945600, 6227020800, 0, 81729648000, 7410154752000, 307697854464000, 6402373705728000, 2375880867360000, 354798209525760000, 25460995321681920000, 1090665702016450560000, 26003493399464380800000]

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

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