A306512 - cp's OEIS frontend

A306512 Number A(n,k) of permutations p of [n] having no index i with |p(i)-i| = k; square array A(n,k), n>=0, k>=0, read by antidiagonals.

n	a(n)
0	1
1	1
2	0
3	1
4	1
5	1
6	1
7	1
8	1
9	2
10	1
11	1
12	2
13	2
14	9
15	1
16	1
17	2
18	3
19	5
20	44
21	1
22	1
23	2
24	6
25	9
26	21
27	265
28	1
29	1
30	2
31	6
32	14
33	34
34	117
35	1854
36	1
37	1
38	2
39	6
40	24
41	53
42	176
43	792
44	14833
45	1
46	1
47	2
48	6
49	24
50	78
51	265
52	1106
53	6205
54	133496
55	1
56	1
57	2
58	6
59	24
60	120
61	362
62	1554
63	8241
64	55005
65	1334961

[1, 1, 0, 1, 1, 1, 1, 1, 1, 2, 1, 1, 2, 2, 9, 1, 1, 2, 3, 5, 44, 1, 1, 2, 6, 9, 21, 265, 1, 1, 2, 6, 14, 34, 117, 1854, 1, 1, 2, 6, 24, 53, 176, 792, 14833, 1, 1, 2, 6, 24, 78, 265, 1106, 6205, 133496, 1, 1, 2, 6, 24, 120, 362, 1554, 8241, 55005, 1334961]

cp's OEIS Frontend

A306512 Number A(n,k) of permutations p of [n] having no index i with |p(i)-i| = k; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

List of values