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.

A274305 Order of shuffle group generated by in- and out-horseshoe shuffles of a deck of 2n cards.

Table of values

n a(n)
1 2
2 12
3 120
4 32
5 3628800
6 95040
7 87178291200
8 80
9 6402373705728000
10 1216451004088320000
11 1124000727777607680000
12 310224200866619719680000
13 403291461126605635584000000
14 152444172305856930250752000000
15 265252859812191058636308480000000
16 192
17 295232799039604140847618609643520000000

List of values

[2, 12, 120, 32, 3628800, 95040, 87178291200, 80, 6402373705728000, 1216451004088320000, 1124000727777607680000, 310224200866619719680000, 403291461126605635584000000, 152444172305856930250752000000, 265252859812191058636308480000000, 192, 295232799039604140847618609643520000000]

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

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