A130276 - cp's OEIS frontend

A130276 Number of degree-2n permutations such that number of cycles of size 2k-1 is even (or zero) for every k.

n	a(n)
0	1
1	2
2	16
3	416
4	20224
5	1645312
6	196388864
7	33279311872
8	7427338829824
9	2151276556845056
10	771086221948223488
11	340572557390992900096
12	179222835344084459061248
13	112158801651454395931426816
14	81399358513573250066141937664
15	68530340884909785149816189222912

[1, 2, 16, 416, 20224, 1645312, 196388864, 33279311872, 7427338829824, 2151276556845056, 771086221948223488, 340572557390992900096, 179222835344084459061248, 112158801651454395931426816, 81399358513573250066141937664, 68530340884909785149816189222912]

cp's OEIS Frontend

A130276 Number of degree-2n permutations such that number of cycles of size 2k-1 is even (or zero) for every k.

Table of values

List of values