A207508 - cp's OEIS frontend

A207508 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 1 vertically.

n	a(n)
1	2
2	16
3	72
4	438
5	2638
6	10340
7	50322
8	221672
9	938572
10	4001444
11	16081184
12	65882872
13	265536422
14	1041167756
15	4136910380
16	16075083164
17	62441083194
18	240925209706
19	924668629616
20	3528820338804
21	13446998876758
22	50858295309890

[2, 16, 72, 438, 2638, 10340, 50322, 221672, 938572, 4001444, 16081184, 65882872, 265536422, 1041167756, 4136910380, 16075083164, 62441083194, 240925209706, 924668629616, 3528820338804, 13446998876758, 50858295309890]

cp's OEIS Frontend

A207508 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 1 vertically.

Table of values

List of values