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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.

A302579 Expansion of e.g.f. exp(cosh(x)/cos(x)-1) (even powers only).

Table of values

n a(n)
0 1
1 2
2 24
3 632
4 28784
5 1991552
6 193410624
7 24993180032
8 4134783110144
9 850499728758272
10 212579274719007744
11 63381008507902595072
12 22200896917210834817024
13 9019985888570141052280832
14 4204783981520054371872374784
15 2228007853953954434037178007552

List of values

[1, 2, 24, 632, 28784, 1991552, 193410624, 24993180032, 4134783110144, 850499728758272, 212579274719007744, 63381008507902595072, 22200896917210834817024, 9019985888570141052280832, 4204783981520054371872374784, 2228007853953954434037178007552]

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

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