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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.

A348587 Expansion of e.g.f. exp(x) / (2 - cos(x)).

Table of values

n a(n)
0 1
1 1
2 0
3 -2
4 2
5 26
6 -30
7 -622
8 982
9 25846
10 -50910
11 -1639142
12 3874862
13 147434366
14 -406614390
15 -17851478062
16 56266545142
17 2799621404086
18 -9927225631470
19 -552054087163382
20 2175042302117822
21 133686372253841006
22 -579383205000618150
23 -39002628245713951102

List of values

[1, 1, 0, -2, 2, 26, -30, -622, 982, 25846, -50910, -1639142, 3874862, 147434366, -406614390, -17851478062, 56266545142, 2799621404086, -9927225631470, -552054087163382, 2175042302117822, 133686372253841006, -579383205000618150, -39002628245713951102]

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

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