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.

A127231 a(n) = (2n)! + 1.

Table of values

n a(n)
0 2
1 3
2 25
3 721
4 40321
5 3628801
6 479001601
7 87178291201
8 20922789888001
9 6402373705728001
10 2432902008176640001
11 1124000727777607680001
12 620448401733239439360001
13 403291461126605635584000001
14 304888344611713860501504000001
15 265252859812191058636308480000001

List of values

[2, 3, 25, 721, 40321, 3628801, 479001601, 87178291201, 20922789888001, 6402373705728001, 2432902008176640001, 1124000727777607680001, 620448401733239439360001, 403291461126605635584000001, 304888344611713860501504000001, 265252859812191058636308480000001]

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

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