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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.

A296462 Expansion of e.g.f. arcsin(x)*arctanh(x) (even powers only).

Table of values

n a(n)
0 0
1 2
2 12
3 238
4 9912
5 708282
6 77392260
7 12002011110
8 2507167177200
9 678724656721650
10 231129344455890300
11 96694934804540934750
12 48752132066414189721000
13 29154453671147281799726250
14 20403607225475633039372992500
15 16520371586328834323725749873750
16 15322889489994265975004588078700000

List of values

[0, 2, 12, 238, 9912, 708282, 77392260, 12002011110, 2507167177200, 678724656721650, 231129344455890300, 96694934804540934750, 48752132066414189721000, 29154453671147281799726250, 20403607225475633039372992500, 16520371586328834323725749873750, 15322889489994265975004588078700000]

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

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