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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.

A296789 Expansion of e.g.f. exp(x*arctanh(x)) (even powers only).

Table of values

n a(n)
0 1
1 2
2 20
3 504
4 24464
5 1959840
6 234852672
7 39370660224
8 8799246209280
9 2528787321598464
10 908585701684024320
11 399070678264750356480
12 210373049449102957645824
13 131083661069772517440921600
14 95304505860052894815543705600
15 79961055068441273887848131297280

List of values

[1, 2, 20, 504, 24464, 1959840, 234852672, 39370660224, 8799246209280, 2528787321598464, 908585701684024320, 399070678264750356480, 210373049449102957645824, 131083661069772517440921600, 95304505860052894815543705600, 79961055068441273887848131297280]

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

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