A280156 - cp's OEIS frontend

A280156 Number of nX3 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

n	a(n)
1	2
2	8
3	31
4	94
5	305
6	950
7	2901
8	8728
9	26068
10	77326
11	228367
12	671446
13	1967328
14	5745190
15	16730555
16	48594066
17	140815777
18	407186706
19	1175159395
20	3385527188
21	9737463217
22	27964574958
23	80197812317
24	229694924100
25	657073271390
26	1877519404364

[2, 8, 31, 94, 305, 950, 2901, 8728, 26068, 77326, 228367, 671446, 1967328, 5745190, 16730555, 48594066, 140815777, 407186706, 1175159395, 3385527188, 9737463217, 27964574958, 80197812317, 229694924100, 657073271390, 1877519404364]

cp's OEIS Frontend

A280156 Number of nX3 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

Table of values

List of values