A268776 - cp's OEIS frontend

A268776 Number of n X 3 binary arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two no more than once.

n	a(n)
1	7
2	26
3	91
4	316
5	1031
6	3354
7	10615
8	33344
9	103339
10	317958
11	970515
12	2945172
13	8888719
14	26705714
15	79909167
16	238257768
17	708129267
18	2098664158
19	6203795403
20	18296271036
21	53845375703
22	158159174410
23	463734769895
24	1357486034320
25	3967761581627

[7, 26, 91, 316, 1031, 3354, 10615, 33344, 103339, 317958, 970515, 2945172, 8888719, 26705714, 79909167, 238257768, 708129267, 2098664158, 6203795403, 18296271036, 53845375703, 158159174410, 463734769895, 1357486034320, 3967761581627]

cp's OEIS Frontend

A268776 Number of n X 3 binary arrays with some element plus some horizontally, vertically, diagonally or antidiagonally adjacent neighbor totalling two no more than once.

Table of values

List of values