A060307 - cp's OEIS frontend

A060307 Number of degree-4n permutations without odd cycles and such that number of cycles of size 2k is even (or zero) for every k.

n	a(n)
0	1
1	3
2	1365
3	8534295
4	204893714025
5	15735481638151275
6	2760485970394430603325
7	1006427270776555103089989375
8	659316841888260316767029819420625
9	740198799422691022278446846884066321875
10	1306298536067264588818106780684613899555353125

[1, 3, 1365, 8534295, 204893714025, 15735481638151275, 2760485970394430603325, 1006427270776555103089989375, 659316841888260316767029819420625, 740198799422691022278446846884066321875, 1306298536067264588818106780684613899555353125]

cp's OEIS Frontend

A060307 Number of degree-4n permutations without odd cycles and such that number of cycles of size 2k is even (or zero) for every k.

Table of values

List of values