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.

A052618 Expansion of e.g.f. 1/((1-x)^2*(1-x^2)).

Table of values

n a(n)
0 1
1 2
2 8
3 36
4 216
5 1440
6 11520
7 100800
8 1008000
9 10886400
10 130636800
11 1676505600
12 23471078400
13 348713164800
14 5579410636800
15 94152554496000
16 1694745980928000
17 32011868528640000
18 640237370572800000
19 13380961044971520000
20 294381142989373440000

List of values

[1, 2, 8, 36, 216, 1440, 11520, 100800, 1008000, 10886400, 130636800, 1676505600, 23471078400, 348713164800, 5579410636800, 94152554496000, 1694745980928000, 32011868528640000, 640237370572800000, 13380961044971520000, 294381142989373440000]

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

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