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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.

A297215 Expansion of e.g.f. exp(cos(tan(x))-1) (even powers only).

Table of values

n a(n)
0 1
1 -1
2 -4
3 -7
4 1003
5 64836
6 3350349
7 104475395
8 -12291888052
9 -4268687337603
10 -877769324284177
11 -139938933307889412
12 -9581950082738688167
13 6333750977985105075527
14 4837035706491587870342140
15 2439859866050865745230242689
16 1033093869484852949078289394195

List of values

[1, -1, -4, -7, 1003, 64836, 3350349, 104475395, -12291888052, -4268687337603, -877769324284177, -139938933307889412, -9581950082738688167, 6333750977985105075527, 4837035706491587870342140, 2439859866050865745230242689, 1033093869484852949078289394195]

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

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