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.

A357661 Expansion of e.g.f. cosh( (exp(2*x) - 1)/sqrt(2) ).

Table of values

n a(n)
0 1
1 0
2 2
3 12
4 60
5 320
6 2040
7 15568
8 133648
9 1230336
10 11962400
11 123144384
12 1349008320
13 15731096576
14 194349866880
15 2527082917120
16 34392647418112
17 488243791183872
18 7216792525799936
19 110936087161801728
20 1771199461131500544
21 29324602146652307456

List of values

[1, 0, 2, 12, 60, 320, 2040, 15568, 133648, 1230336, 11962400, 123144384, 1349008320, 15731096576, 194349866880, 2527082917120, 34392647418112, 488243791183872, 7216792525799936, 110936087161801728, 1771199461131500544, 29324602146652307456]

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

Content is available under The OEIS End-User License Agreement.