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.

A190196 Denominators of a Taylor series expansion of 1/sqrt(cosh(x)) (even powers only).

Table of values

n a(n)
0 1
1 4
2 96
3 5760
4 645120
5 16588800
6 30656102400
7 11158821273600
8 109310902272000
9 3278015337332736000
10 191637819720990720000
11 25296192203170775040000
12 2541356653499348743618560000
13 3303763649549153366704128000000
14 713612948302617127208091648000000

List of values

[1, 4, 96, 5760, 645120, 16588800, 30656102400, 11158821273600, 109310902272000, 3278015337332736000, 191637819720990720000, 25296192203170775040000, 2541356653499348743618560000, 3303763649549153366704128000000, 713612948302617127208091648000000]

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

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