A280157 - cp's OEIS frontend

A280157 Number of nX4 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

n	a(n)
1	2
2	18
3	94
4	424
5	1854
6	7628
7	30874
8	123312
9	488256
10	1920790
11	7513678
12	29249892
13	113386708
14	437908264
15	1685639238
16	6469357240
17	24762845248
18	94557090250
19	360277506538
20	1369975634630
21	5199885300498
22	19703519987286
23	74545164231536

[2, 18, 94, 424, 1854, 7628, 30874, 123312, 488256, 1920790, 7513678, 29249892, 113386708, 437908264, 1685639238, 6469357240, 24762845248, 94557090250, 360277506538, 1369975634630, 5199885300498, 19703519987286, 74545164231536]

cp's OEIS Frontend

A280157 Number of nX4 0..1 arrays with no element unequal to a strict majority of its horizontal, vertical 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