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.

A151582 Number of permutations of 1..n arranged in a circle with exactly 9 adjacent element pairs in decreasing order.

Table of values

n a(n)
9 0
10 10
11 11143
12 1831644
13 132439905
14 5925941490
15 192648942945
16 4982201574576
17 108507581733075
18 2068026851853900
19 35442327497832350
20 557245611341867160
21 8160353475203019510
22 112618455705219419340
23 1478355077007310516350
24 18597419323476152223600

List of values

[0, 10, 11143, 1831644, 132439905, 5925941490, 192648942945, 4982201574576, 108507581733075, 2068026851853900, 35442327497832350, 557245611341867160, 8160353475203019510, 112618455705219419340, 1478355077007310516350, 18597419323476152223600]

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

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