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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.

A351880 Expansion of e.g.f. 1 / (1 - x)^cos(x).

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 6
5 15
6 105
7 924
8 8204
9 73461
10 700005
11 7323976
12 84472146
13 1064285027
14 14492861747
15 211738655608
16 3302847261448
17 54800458320345
18 963864555797385
19 17914985159719376
20 350861004976886190
21 7221748369472388727
22 155853930324297011719
23 3519121773604369318856

List of values

[1, 1, 2, 3, 6, 15, 105, 924, 8204, 73461, 700005, 7323976, 84472146, 1064285027, 14492861747, 211738655608, 3302847261448, 54800458320345, 963864555797385, 17914985159719376, 350861004976886190, 7221748369472388727, 155853930324297011719, 3519121773604369318856]

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

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