A233026 - cp's OEIS frontend

A233026 T(n,k)=Number of nXk 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, vertically, diagonally or antidiagonally, and top left element zero.

n	a(n)
1	1
2	3
3	3
4	9
5	15
6	9
7	27
8	81
9	81
10	27
11	81
12	435
13	849
14	435
15	81
16	243
17	2337
18	8835
19	8835
20	2337
21	243
22	729
23	12555
24	92067
25	179999
26	92067
27	12555
28	729
29	2187
30	67449
31	959385
32	3685017
33	3685017
34	959385
35	67449
36	2187
37	6561
38	362355
39	9997413
40	75489671
41	149128385

[1, 3, 3, 9, 15, 9, 27, 81, 81, 27, 81, 435, 849, 435, 81, 243, 2337, 8835, 8835, 2337, 243, 729, 12555, 92067, 179999, 92067, 12555, 729, 2187, 67449, 959385, 3685017, 3685017, 959385, 67449, 2187, 6561, 362355, 9997413, 75489671, 149128385]

cp's OEIS Frontend

A233026 T(n,k)=Number of nXk 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, vertically, diagonally or antidiagonally, and top left element zero.

Table of values

List of values