A222878 - cp's OEIS frontend

A222878 T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

n	a(n)
1	1
2	1
3	2
4	2
5	11
6	5
7	11
8	122
9	131
10	15
11	34
12	1814
13	6282
14	2150
15	51
16	131
17	26311
18	409775
19	443510
20	32491
21	187
22	438
23	399849
24	19707855
25	95867967
26	23794078
27	533186
28	715
29	2150
30	6013669
31	1340197778
32	20978414941
33	22794825314
34	1698174722
35	8362152
36	2795
37	7676

[1, 1, 2, 2, 11, 5, 11, 122, 131, 15, 34, 1814, 6282, 2150, 51, 131, 26311, 409775, 443510, 32491, 187, 438, 399849, 19707855, 95867967, 23794078, 533186, 715, 2150, 6013669, 1340197778, 20978414941, 22794825314, 1698174722, 8362152, 2795, 7676]

cp's OEIS Frontend

A222878 T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements equal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

Table of values

List of values