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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.

A296790 Expansion of e.g.f. sec(x*sec(x)) (even powers only).

Table of values

n a(n)
0 1
1 1
2 17
3 601
4 38849
5 4022641
6 609933521
7 127391254537
8 35067716300033
9 12304447787106529
10 5360597104269331985
11 2839145693984474128057
12 1796556232541725248396737
13 1338623568393194541863879761
14 1160057210771530210422755155409
15 1156898060700987368136296212581481

List of values

[1, 1, 17, 601, 38849, 4022641, 609933521, 127391254537, 35067716300033, 12304447787106529, 5360597104269331985, 2839145693984474128057, 1796556232541725248396737, 1338623568393194541863879761, 1160057210771530210422755155409, 1156898060700987368136296212581481]

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

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