A185903 - cp's OEIS frontend

A185903 T(n,k)=1/8 the number of nXk 0..7 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.

n	a(n)
1	0
2	1
3	1
4	1
5	15
6	1
7	8
8	196
9	196
10	8
11	15
12	2765
13	7854
14	2765
15	15
16	71
17	38731
18	546280
19	546280
20	38731
21	71
22	176
23	545328
24	28967421
25	139230658
26	28967421
27	545328
28	176
29	673
30	7675381
31	1748982326
32	32611077940
33	32611077940
34	1748982326
35	7675381
36	673
37	1905

[0, 1, 1, 1, 15, 1, 8, 196, 196, 8, 15, 2765, 7854, 2765, 15, 71, 38731, 546280, 546280, 38731, 71, 176, 545328, 28967421, 139230658, 28967421, 545328, 176, 673, 7675381, 1748982326, 32611077940, 32611077940, 1748982326, 7675381, 673, 1905]

cp's OEIS Frontend

A185903 T(n,k)=1/8 the number of nXk 0..7 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.

Table of values

List of values