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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.

A296837 Expansion of e.g.f. log(1 + x*tan(x/2)) (even powers only).

Table of values

n a(n)
0 0
1 1
2 -2
3 18
4 -312
5 9470
6 -436860
7 28616322
8 -2522596496
9 288046961190
10 -41355026494020
11 7291524732108650
12 -1548849359704927896
13 390122366308850972238
14 -114968364853645904762252
15 39189956630839558368115410
16 -15300235972710835734174638880

List of values

[0, 1, -2, 18, -312, 9470, -436860, 28616322, -2522596496, 288046961190, -41355026494020, 7291524732108650, -1548849359704927896, 390122366308850972238, -114968364853645904762252, 39189956630839558368115410, -15300235972710835734174638880]

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

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