A229847 - cp's OEIS frontend

A229847 T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value 2-x(i,j).

n	a(n)
1	0
2	3
3	3
4	3
5	15
6	3
7	9
8	81
9	81
10	9
11	15
12	423
13	987
14	423
15	15
16	33
17	2247
18	13401
19	13401
20	2247
21	33
22	63
23	11925
24	178311
25	453837
26	178311
27	11925
28	63
29	129
30	63291
31	2381469
32	15269193
33	15269193
34	2381469
35	63291
36	129
37	255
38	335943
39	31783299
40	514371027
41	1296261759
42	514371027

[0, 3, 3, 3, 15, 3, 9, 81, 81, 9, 15, 423, 987, 423, 15, 33, 2247, 13401, 13401, 2247, 33, 63, 11925, 178311, 453837, 178311, 11925, 63, 129, 63291, 2381469, 15269193, 15269193, 2381469, 63291, 129, 255, 335943, 31783299, 514371027, 1296261759, 514371027]

cp's OEIS Frontend

A229847 T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value 2-x(i,j).

Table of values

List of values