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.

A323805 Number of permutations p of [n] such that max_{j=1..n} |p(j)-j| = 9.

Table of values

n a(n)
9 0
10 685440
11 11123280
12 124658640
13 1166388360
14 9804325176
15 77191636698
16 585120530242
17 4352418785279
18 32202026068621
19 240183024181127
20 1821246237562657
21 13946936520272756
22 107314021044232924
23 826507136709547152
24 6354476077005199296
25 48686592289143593088

List of values

[0, 685440, 11123280, 124658640, 1166388360, 9804325176, 77191636698, 585120530242, 4352418785279, 32202026068621, 240183024181127, 1821246237562657, 13946936520272756, 107314021044232924, 826507136709547152, 6354476077005199296, 48686592289143593088]

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

Content is available under The OEIS End-User License Agreement.