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.

A052616 Expansion of e.g.f. (3+2*x)/(1-x^2).

Table of values

n a(n)
0 3
1 2
2 6
3 12
4 72
5 240
6 2160
7 10080
8 120960
9 725760
10 10886400
11 79833600
12 1437004800
13 12454041600
14 261534873600
15 2615348736000
16 62768369664000
17 711374856192000
18 19207121117184000
19 243290200817664000
20 7298706024529920000
21 102181884343418880000
22 3372002183332823040000

List of values

[3, 2, 6, 12, 72, 240, 2160, 10080, 120960, 725760, 10886400, 79833600, 1437004800, 12454041600, 261534873600, 2615348736000, 62768369664000, 711374856192000, 19207121117184000, 243290200817664000, 7298706024529920000, 102181884343418880000, 3372002183332823040000]

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

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