A260111 - cp's OEIS frontend

A260111 Number of permutations p of [n] with no fixed points and cyclic displacement of elements restricted by six: p(i)<>i and (i-p(i) mod n <= 6 or p(i)-i mod n <= 6).

n	a(n)
0	1
1	0
2	1
3	2
4	9
5	44
6	265
7	1854
8	14833
9	133496
10	1334961
11	14684570
12	176214841
13	2290792932
14	10930514688
15	52034548064
16	247272708868
17	1173385630596
18	5560837425792
19	26322368822528
20	124470922522980
21	589274182149120
22	2793967092494408
23	13269446868206480
24	63125696320334912

[1, 0, 1, 2, 9, 44, 265, 1854, 14833, 133496, 1334961, 14684570, 176214841, 2290792932, 10930514688, 52034548064, 247272708868, 1173385630596, 5560837425792, 26322368822528, 124470922522980, 589274182149120, 2793967092494408, 13269446868206480, 63125696320334912]

cp's OEIS Frontend

A260111 Number of permutations p of [n] with no fixed points and cyclic displacement of elements restricted by six: p(i)<>i and (i-p(i) mod n <= 6 or p(i)-i mod n <= 6).

Table of values

List of values