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.

A351883 Expansion of e.g.f. 1 / (1 - x)^sech(x).

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 6
5 35
6 285
7 2044
8 13804
9 108093
10 1083405
11 12281896
12 143452386
13 1763156031
14 23845410407
15 353626471808
16 5579871336488
17 92609430408361
18 1627509065584185
19 30379312334903408
20 598533509334403470
21 12366674489588950555
22 267527916985316556019

List of values

[1, 1, 2, 3, 6, 35, 285, 2044, 13804, 108093, 1083405, 12281896, 143452386, 1763156031, 23845410407, 353626471808, 5579871336488, 92609430408361, 1627509065584185, 30379312334903408, 598533509334403470, 12366674489588950555, 267527916985316556019]

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

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