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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.

A296942 Expansion of e.g.f. arcsinh(x*tan(x/2)) (even powers only).

Table of values

n a(n)
0 0
1 1
2 1
3 -12
4 -193
5 5195
6 397248
7 -9589391
8 -3147743231
9 -10931156748
10 65632780196255
11 4713930109297211
12 -2846093176389647904
13 -606335605925899344287
14 213167747093485780707937
15 109460864600185764327567060
16 -21782399212761670190907400897

List of values

[0, 1, 1, -12, -193, 5195, 397248, -9589391, -3147743231, -10931156748, 65632780196255, 4713930109297211, -2846093176389647904, -606335605925899344287, 213167747093485780707937, 109460864600185764327567060, -21782399212761670190907400897]

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

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