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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.

A107404 Expansion of e.g.f. 1/(1 - sinh(x))^2.

Table of values

n a(n)
0 1
1 2
2 6
3 26
4 144
5 962
6 7536
7 67706
8 685824
9 7730882
10 95970816
11 1300815386
12 19113775104
13 302616787202
14 5135568746496
15 92996021795066
16 1789758460329984
17 36479831022049922
18 785020114093080576
19 17785273588395966746
20 423150055005134782464
21 10548427254444904799042

List of values

[1, 2, 6, 26, 144, 962, 7536, 67706, 685824, 7730882, 95970816, 1300815386, 19113775104, 302616787202, 5135568746496, 92996021795066, 1789758460329984, 36479831022049922, 785020114093080576, 17785273588395966746, 423150055005134782464, 10548427254444904799042]

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

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