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.

A151579 Number of permutations of 1..n arranged in a circle with exactly 6 adjacent element pairs in decreasing order.

Table of values

n a(n)
6 0
7 7
8 960
9 38637
10 882340
11 14413894
12 188690976
13 2112659718
14 21078701112
15 192648942945
16 1644431982848
17 13295963811083
18 102911255502876
19 768689550213368
20 5575887557096640
21 39473882067826332
22 273820542615005232
23 1867156445048432043
24 12548621876834960064

List of values

[0, 7, 960, 38637, 882340, 14413894, 188690976, 2112659718, 21078701112, 192648942945, 1644431982848, 13295963811083, 102911255502876, 768689550213368, 5575887557096640, 39473882067826332, 273820542615005232, 1867156445048432043, 12548621876834960064]

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

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