A281766 - cp's OEIS frontend

A281766 Number of 2 X n 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal 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	4
3	14
4	40
5	110
6	280
7	698
8	1696
9	4052
10	9564
11	22330
12	51728
13	118998
14	272228
15	619804
16	1405456
17	3175966
18	7155320
19	16078698
20	36048008
21	80656900
22	180149700
23	401740002
24	894646944
25	1989842814
26	4420825196
27	9811946668
28	21757950712
29	48209235558

[0, 4, 14, 40, 110, 280, 698, 1696, 4052, 9564, 22330, 51728, 118998, 272228, 619804, 1405456, 3175966, 7155320, 16078698, 36048008, 80656900, 180149700, 401740002, 894646944, 1989842814, 4420825196, 9811946668, 21757950712, 48209235558]

cp's OEIS Frontend

A281766 Number of 2 X n 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal 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