A281804 - cp's OEIS frontend

A281804 Number of 3Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

n	a(n)
1	0
2	9
3	75
4	372
5	1725
6	7293
7	29665
8	116539
9	442210
10	1649985
11	6023148
12	21692828
13	77107557
14	271088870
15	944377886
16	3262534584
17	11190762816
18	38140286571
19	129245999168
20	435739937780
21	1462231704463
22	4886245700669
23	16265366134625

[0, 9, 75, 372, 1725, 7293, 29665, 116539, 442210, 1649985, 6023148, 21692828, 77107557, 271088870, 944377886, 3262534584, 11190762816, 38140286571, 129245999168, 435739937780, 1462231704463, 4886245700669, 16265366134625]

cp's OEIS Frontend

A281804 Number of 3Xn 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

Table of values

List of values