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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.

A302585 a(n) = n! * [x^n] exp(n*x)/cosh(x).

Table of values

n a(n)
0 1
1 1
2 3
3 18
4 165
5 2000
6 29855
7 527632
8 10762857
9 248811264
10 6428081979
11 183537694208
12 5739195739277
13 195059957567488
14 7159662639822615
15 282252719348582400
16 11894243092571825745
17 533554809104057434112
18 25384473065818477067123
19 1276688324194885747474432

List of values

[1, 1, 3, 18, 165, 2000, 29855, 527632, 10762857, 248811264, 6428081979, 183537694208, 5739195739277, 195059957567488, 7159662639822615, 282252719348582400, 11894243092571825745, 533554809104057434112, 25384473065818477067123, 1276688324194885747474432]

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

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