cp's OEIS Frontend

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.

A009227 Expansion of e.g.f.: exp(sinh(x))/exp(x).

Table of values

n a(n)
0 1
1 0
2 0
3 1
4 0
5 1
6 10
7 1
8 56
9 281
10 246
11 4621
12 16412
13 53197
14 564642
15 1937937
16 13309648
17 100397649
18 454215214
19 4082253589
20 26498068420
21 174791970677
22 1575851086778
23 10628056916313
24 91523101970104
25 788580099169337
26 6237722665351750
27 60190551618214941

List of values

[1, 0, 0, 1, 0, 1, 10, 1, 56, 281, 246, 4621, 16412, 53197, 564642, 1937937, 13309648, 100397649, 454215214, 4082253589, 26498068420, 174791970677, 1575851086778, 10628056916313, 91523101970104, 788580099169337, 6237722665351750, 60190551618214941]

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

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