A208021 - cp's OEIS frontend

A208021 T(n,k) = Number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, vertical, diagonal or antidiagonal neighbor (colorings ignoring permutations of colors).

n	a(n)
1	1
2	1
3	1
4	2
5	1
6	2
7	5
8	7
9	7
10	5
11	15
12	87
13	270
14	87
15	15
16	52
17	1657
18	27093
19	27093
20	1657
21	52
22	203
23	43833
24	5252041
25	30066912
26	5252041
27	43833
28	203
29	877
30	1515903
31	1688298227
32	80318704605
33	80318704605
34	1688298227
35	1515903
36	877
37	4140
38	65766991

[1, 1, 1, 2, 1, 2, 5, 7, 7, 5, 15, 87, 270, 87, 15, 52, 1657, 27093, 27093, 1657, 52, 203, 43833, 5252041, 30066912, 5252041, 43833, 203, 877, 1515903, 1688298227, 80318704605, 80318704605, 1688298227, 1515903, 877, 4140, 65766991]

cp's OEIS Frontend

A208021 T(n,k) = Number of n X k nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to any horizontal, vertical, diagonal or antidiagonal neighbor (colorings ignoring permutations of colors).

Table of values

List of values