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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.

A307978 Expansion of e.g.f. exp((sinh(x) - sin(x))/2).

Table of values

n a(n)
0 1
1 0
2 0
3 1
4 0
5 0
6 10
7 1
8 0
9 280
10 120
11 1
12 15400
13 17160
14 2080
15 1401401
16 3203200
17 1290640
18 190623040
19 775975201
20 712150400
21 36321556720
22 239000886400
23 413465452401
24 9339501072000
25 91625659447400
26 266045692290560
27 3216459513124001
28 42923384190336000
29 193108117771690680

List of values

[1, 0, 0, 1, 0, 0, 10, 1, 0, 280, 120, 1, 15400, 17160, 2080, 1401401, 3203200, 1290640, 190623040, 775975201, 712150400, 36321556720, 239000886400, 413465452401, 9339501072000, 91625659447400, 266045692290560, 3216459513124001, 42923384190336000, 193108117771690680]

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

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