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.

A323802 Number of permutations p of [n] such that max_{j=1..n} |p(j)-j| = 6.

Table of values

n a(n)
6 0
7 1320
8 13656
9 96090
10 569602
11 3111243
12 16447329
13 87358763
14 475067757
15 2607565996
16 14310288148
17 78087401424
18 422646322560
19 2269565277936
20 12114270563852
21 64454693890844
22 342374934748155
23 1817028234672099
24 9636622425425550
25 51069856507725138
26 270408018010461065

List of values

[0, 1320, 13656, 96090, 569602, 3111243, 16447329, 87358763, 475067757, 2607565996, 14310288148, 78087401424, 422646322560, 2269565277936, 12114270563852, 64454693890844, 342374934748155, 1817028234672099, 9636622425425550, 51069856507725138, 270408018010461065]

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

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