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.

A009168 Expansion of cosh(tan(x)^2).

Table of values

n a(n)
0 1
1 0
2 12
3 480
4 25872
5 2031360
6 227781312
7 34846855680
8 6932161765632
9 1724433365360640
10 521307469175442432
11 187630895361738301440
12 79180079598904589094912
13 38701262478049196612321280

List of values

[1, 0, 12, 480, 25872, 2031360, 227781312, 34846855680, 6932161765632, 1724433365360640, 521307469175442432, 187630895361738301440, 79180079598904589094912, 38701262478049196612321280]

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

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