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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.

A381344 Expansion of e.g.f. 1/( 1 - x * cosh(sqrt(2)*x) ).

Table of values

n a(n)
0 1
1 1
2 2
3 12
4 72
5 500
6 4560
7 47936
8 565376
9 7572240
10 112838400
11 1844425792
12 32910332928
13 636463467328
14 13251265570816
15 295598326909440
16 7034150340034560
17 177843592245969152
18 4760839037033054208
19 134528586280018721792
20 4001489050575059025920
21 124973219149863342633984

List of values

[1, 1, 2, 12, 72, 500, 4560, 47936, 565376, 7572240, 112838400, 1844425792, 32910332928, 636463467328, 13251265570816, 295598326909440, 7034150340034560, 177843592245969152, 4760839037033054208, 134528586280018721792, 4001489050575059025920, 124973219149863342633984]

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

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