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.

A368678 Number of permutations of [n] whose cycle maxima sum to 2n.

Table of values

n a(n)
0 1
1 0
2 0
3 1
4 2
5 10
6 41
7 260
8 1552
9 12818
10 101280
11 1021908
12 10154064
13 121656672
14 1447205472
15 20215013184
16 280271024640
17 4457067906240
18 70826580095040
19 1264147627392000
20 22588177271650560
21 448332829478760960
22 8899910723677639680
23 194096853444946636800

List of values

[1, 0, 0, 1, 2, 10, 41, 260, 1552, 12818, 101280, 1021908, 10154064, 121656672, 1447205472, 20215013184, 280271024640, 4457067906240, 70826580095040, 1264147627392000, 22588177271650560, 448332829478760960, 8899910723677639680, 194096853444946636800]

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

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