A281805 - cp's OEIS frontend

A281805 Number of 4Xn 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	34
3	324
4	1916
5	12318
6	71290
7	396185
8	2143364
9	11250451
10	57853036
11	292724002
12	1458437418
13	7182757280
14	35002131964
15	169019645294
16	809806421452
17	3852574230183
18	18214915308180
19	85640566518922
20	400632266290872

[0, 34, 324, 1916, 12318, 71290, 396185, 2143364, 11250451, 57853036, 292724002, 1458437418, 7182757280, 35002131964, 169019645294, 809806421452, 3852574230183, 18214915308180, 85640566518922, 400632266290872]

cp's OEIS Frontend

A281805 Number of 4Xn 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