A008305 - cp's OEIS frontend

A008305 Triangle read by rows: a(n,k) = number of permutations of [n] allowing i->i+j (mod n), j=0..k-1.

n	a(n)
1	1
2	1
3	2
4	1
5	2
6	6
7	1
8	2
9	9
10	24
11	1
12	2
13	13
14	44
15	120
16	1
17	2
18	20
19	80
20	265
21	720
22	1
23	2
24	31
25	144
26	579
27	1854
28	5040
29	1
30	2
31	49
32	264
33	1265
34	4738
35	14833
36	40320
37	1
38	2
39	78
40	484
41	2783
42	12072
43	43387
44	133496
45	362880
46	1
47	2
48	125
49	888
50	6208
51	30818
52	126565
53	439792
54	1334961
55	3628800

[1, 1, 2, 1, 2, 6, 1, 2, 9, 24, 1, 2, 13, 44, 120, 1, 2, 20, 80, 265, 720, 1, 2, 31, 144, 579, 1854, 5040, 1, 2, 49, 264, 1265, 4738, 14833, 40320, 1, 2, 78, 484, 2783, 12072, 43387, 133496, 362880, 1, 2, 125, 888, 6208, 30818, 126565, 439792, 1334961, 3628800]

cp's OEIS Frontend

A008305 Triangle read by rows: a(n,k) = number of permutations of [n] allowing i->i+j (mod n), j=0..k-1.

Table of values

List of values