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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.

A296743 Expansion of e.g.f. arctanh(x*sec(x)) (odd powers only).

Table of values

n a(n)
0 1
1 5
2 109
3 5977
4 612729
5 100954061
6 24395453861
7 8128143367905
8 3571195811862385
9 2000535014776893973
10 1391684597704875555165
11 1177047158822263838854889
12 1189444022487013498606939625
13 1415364934488337503351305867997
14 1958850511524588636608881908473749

List of values

[1, 5, 109, 5977, 612729, 100954061, 24395453861, 8128143367905, 3571195811862385, 2000535014776893973, 1391684597704875555165, 1177047158822263838854889, 1189444022487013498606939625, 1415364934488337503351305867997, 1958850511524588636608881908473749]

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

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