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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.

A218301 E.g.f. A(x) satisfies A( x/(exp(x)*cosh(x)) ) = exp(3*x)*cosh(3*x).

Table of values

n a(n)
0 1
1 3
2 24
3 252
4 3360
5 55008
6 1074816
7 24499968
8 639744000
9 18856765440
10 619897847808
11 22502300590080
12 894419152404480
13 38651030120693760
14 1804765006764441600
15 90574514900736933888
16 4862862027933962207232
17 278158492957848901779456
18 16889663645642083220324352

List of values

[1, 3, 24, 252, 3360, 55008, 1074816, 24499968, 639744000, 18856765440, 619897847808, 22502300590080, 894419152404480, 38651030120693760, 1804765006764441600, 90574514900736933888, 4862862027933962207232, 278158492957848901779456, 16889663645642083220324352]

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

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