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.

A000476 Number of permutations of an n-sequence discordant with three given permutations (see reference) in n-1 places.

Table of values

n a(n)
5 15
6 72
7 609
8 4960
9 46188
10 471660
11 5275941
12 64146768
13 842803767
14 11902900380
15 179857257960
16 2895705788736
17 49491631601635
18 895010868095256
19 17074867330880805
20 342733960299356800
21 7220616209235766260
22 159312370008282356844
23 3673720238903201471593

List of values

[15, 72, 609, 4960, 46188, 471660, 5275941, 64146768, 842803767, 11902900380, 179857257960, 2895705788736, 49491631601635, 895010868095256, 17074867330880805, 342733960299356800, 7220616209235766260, 159312370008282356844, 3673720238903201471593]

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

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