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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.

A352646 Expansion of e.g.f. 1/(1 - 2 * x * cos(x)).

Table of values

n a(n)
0 1
1 2
2 8
3 42
4 288
5 2410
6 24000
7 277186
8 3648512
9 53936082
10 885150720
11 15970846298
12 314273439744
13 6698574264122
14 153746319720448
15 3780677636321010
16 99163499845386240
17 2763481838977368994
18 81542013760903053312
19 2539717324111483027594

List of values

[1, 2, 8, 42, 288, 2410, 24000, 277186, 3648512, 53936082, 885150720, 15970846298, 314273439744, 6698574264122, 153746319720448, 3780677636321010, 99163499845386240, 2763481838977368994, 81542013760903053312, 2539717324111483027594]

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

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