A231391 - cp's OEIS frontend

A231391 Number of (n+1) X (3+1) 0..2 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.

n	a(n)
1	14
2	38
3	100
4	272
5	740
6	2061
7	5834
8	16521
9	46969
10	133864
11	382377
12	1093837
13	3133209
14	8984580
15	25782696
16	74034161
17	212690121
18	611260183
19	1757248511
20	5052897615
21	14532031920
22	41799692849
23	120245136990
24	345938696990
25	995313138719

[14, 38, 100, 272, 740, 2061, 5834, 16521, 46969, 133864, 382377, 1093837, 3133209, 8984580, 25782696, 74034161, 212690121, 611260183, 1757248511, 5052897615, 14532031920, 41799692849, 120245136990, 345938696990, 995313138719]

cp's OEIS Frontend

A231391 Number of (n+1) X (3+1) 0..2 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.

Table of values

List of values