A260094 - cp's OEIS frontend

A260094 Number of permutations p of [n] with no fixed points and cyclic displacement of elements restricted by five: p(i)<>i and (i-p(i) mod n <= 5 or p(i)-i mod n <= 5).

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	59245120
13	238282730
14	956135652
15	3828509472
16	15296722436
17	60990443730
18	243596762752
19	975165838970
20	3913571754304
21	15742403448024
22	63428117376852
23	255662480209770
24	1031080275942464
25	4161127398011040

[1, 0, 1, 2, 9, 44, 265, 1854, 14833, 133496, 1334961, 14684570, 59245120, 238282730, 956135652, 3828509472, 15296722436, 60990443730, 243596762752, 975165838970, 3913571754304, 15742403448024, 63428117376852, 255662480209770, 1031080275942464, 4161127398011040]

cp's OEIS Frontend

A260094 Number of permutations p of [n] with no fixed points and cyclic displacement of elements restricted by five: p(i)<>i and (i-p(i) mod n <= 5 or p(i)-i mod n <= 5).

Table of values

List of values