A279978 - cp's OEIS frontend

A279978 Number of 2 X n 0..1 arrays with no element equal to a strict majority of its horizontal 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	3
3	9
4	24
5	62
6	134
7	277
8	542
9	1035
10	1930
11	3546
12	6432
13	11555
14	20590
15	36445
16	64140
17	112326
18	195866
19	340241
20	589038
21	1016671
22	1749950
23	3004610
24	5147092
25	8798911
26	15012766
27	25569393
28	43477440
29	73814414
30	125140142
31	211870477
32	358260350

[0, 3, 9, 24, 62, 134, 277, 542, 1035, 1930, 3546, 6432, 11555, 20590, 36445, 64140, 112326, 195866, 340241, 589038, 1016671, 1749950, 3004610, 5147092, 8798911, 15012766, 25569393, 43477440, 73814414, 125140142, 211870477, 358260350]

cp's OEIS Frontend

A279978 Number of 2 X n 0..1 arrays with no element equal to a strict majority of its horizontal 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