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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.

A351882 Expansion of e.g.f. 1 / (1 - x)^sec(x).

Table of values

n a(n)
0 1
1 1
2 2
3 9
4 42
5 255
6 1785
7 14406
8 131236
9 1328037
10 14809965
11 180014054
12 2371072374
13 33607312219
14 510183508471
15 8255546409722
16 141855645636152
17 2579236008913689
18 49471832899923129
19 998261936044450726
20 21138674688880283370
21 468687157358947546415
22 10858634384569444410179

List of values

[1, 1, 2, 9, 42, 255, 1785, 14406, 131236, 1328037, 14809965, 180014054, 2371072374, 33607312219, 510183508471, 8255546409722, 141855645636152, 2579236008913689, 49471832899923129, 998261936044450726, 21138674688880283370, 468687157358947546415, 10858634384569444410179]

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

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