cp's OEIS Frontend

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.

A012085 Even coefficients in expansion of e.g.f. cos(x)/sqrt(cos(2*x)).

Table of values

n a(n)
0 1
1 1
2 17
3 721
4 58337
5 7734241
6 1526099057
7 419784870961
8 153563504618177
9 72104198836466881
10 42270463533824671697
11 30262124466958766778001
12 25981973075048213029395617
13 26350476755161831091778460321

List of values

[1, 1, 17, 721, 58337, 7734241, 1526099057, 419784870961, 153563504618177, 72104198836466881, 42270463533824671697, 30262124466958766778001, 25981973075048213029395617, 26350476755161831091778460321]

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

Content is available under The OEIS End-User License Agreement.