A189280 - cp's OEIS frontend

A189280 T(n,k) = number of n X k array permutations with each element not moved or moved diagonally or antidiagonally by one.

n	a(n)
1	1
2	1
3	1
4	1
5	4
6	1
7	1
8	9
9	9
10	1
11	1
12	25
13	45
14	25
15	1
16	1
17	64
18	225
19	225
20	64
21	1
22	1
23	169
24	1125
25	2704
26	1125
27	169
28	1
29	1
30	441
31	5625
32	29241
33	29241
34	5625
35	441
36	1
37	1
38	1156
39	28125
40	323761
41	670480
42	323761
43	28125
44	1156
45	1
46	1
47	3025
48	140625
49	3553225
50	15594601
51	15594601
52	3553225

[1, 1, 1, 1, 4, 1, 1, 9, 9, 1, 1, 25, 45, 25, 1, 1, 64, 225, 225, 64, 1, 1, 169, 1125, 2704, 1125, 169, 1, 1, 441, 5625, 29241, 29241, 5625, 441, 1, 1, 1156, 28125, 323761, 670480, 323761, 28125, 1156, 1, 1, 3025, 140625, 3553225, 15594601, 15594601, 3553225]

cp's OEIS Frontend

A189280 T(n,k) = number of n X k array permutations with each element not moved or moved diagonally or antidiagonally by one.

Table of values

List of values