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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.

A357662 Expansion of e.g.f. cosh( (exp(3*x) - 1)/sqrt(3) ).

Table of values

n a(n)
0 1
1 0
2 3
3 27
4 198
5 1485
6 12825
7 132678
8 1582497
9 20603727
10 284290560
11 4132840239
12 63571690485
13 1038868740000
14 18022911716439
15 330305863479615
16 6355242571945878
17 127721845479277737
18 2672729031195365949
19 58142565625982730462
20 1313557910179640120061

List of values

[1, 0, 3, 27, 198, 1485, 12825, 132678, 1582497, 20603727, 284290560, 4132840239, 63571690485, 1038868740000, 18022911716439, 330305863479615, 6355242571945878, 127721845479277737, 2672729031195365949, 58142565625982730462, 1313557910179640120061]

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

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