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.

A012462 Arcsinh(arctan(x)^2) = 2/2!*x^2 - 16/4!*x^4 + 248/6!*x^6 - 3456/8!*x^8 + ...

Table of values

n a(n)
0 0
1 2
2 -16
3 248
4 -3456
5 -164448
6 17537280
7 5001348480
8 -3047690956800
9 999150768960000
10 -194340969261158400
11 -28292890791044597760
12 48811395838790000148480
13 -15658656394130132870062080
14 -19215487887156327014813859840
15 37972554002174500707798919249920

List of values

[0, 2, -16, 248, -3456, -164448, 17537280, 5001348480, -3047690956800, 999150768960000, -194340969261158400, -28292890791044597760, 48811395838790000148480, -15658656394130132870062080, -19215487887156327014813859840, 37972554002174500707798919249920]

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

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