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.

A000492 Number of permutations of an n-sequence discordant with three given permutations (see reference) in n-6 places.

Table of values

n a(n)
6 20
7 154
8 1676
9 14292
10 155690
11 1731708
12 21264624
13 280260864
14 3970116255
15 60113625680
16 969368687752
17 16588175089420
18 300272980075896
19 5733025551810600
20 115148956467702600
21 2427199940533198992
22 53576182138937428377
23 1235917889588345408586

List of values

[20, 154, 1676, 14292, 155690, 1731708, 21264624, 280260864, 3970116255, 60113625680, 969368687752, 16588175089420, 300272980075896, 5733025551810600, 115148956467702600, 2427199940533198992, 53576182138937428377, 1235917889588345408586]

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

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