A279743 - cp's OEIS frontend

A279743 Number of 3Xn 0..1 arrays with no element equal to a strict majority of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

n	a(n)
1	0
2	8
3	35
4	106
5	286
6	746
7	1887
8	4700
9	11553
10	28104
11	67759
12	162144
13	385583
14	912098
15	2147806
16	5037496
17	11773111
18	27427532
19	63715400
20	147634764
21	341291898
22	787312776
23	1812720970
24	4166252110
25	9559865376
26	21903001872
27	50112866179

[0, 8, 35, 106, 286, 746, 1887, 4700, 11553, 28104, 67759, 162144, 385583, 912098, 2147806, 5037496, 11773111, 27427532, 63715400, 147634764, 341291898, 787312776, 1812720970, 4166252110, 9559865376, 21903001872, 50112866179]

cp's OEIS Frontend

A279743 Number of 3Xn 0..1 arrays with no element equal to a strict majority of its horizontal 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