A269083 - cp's OEIS frontend

A269083 Number of n X 2 binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once.

n	a(n)
1	4
2	11
3	30
4	76
5	191
6	467
7	1127
8	2686
9	6339
10	14840
11	34504
12	79759
13	183445
14	420077
15	958248
16	2178427
17	4937234
18	11159252
19	25160111
20	56599879
21	127066227
22	284728994
23	636922003
24	1422499564
25	3172350160
26	7065116255
27	15714769641
28	34912773337

[4, 11, 30, 76, 191, 467, 1127, 2686, 6339, 14840, 34504, 79759, 183445, 420077, 958248, 2178427, 4937234, 11159252, 25160111, 56599879, 127066227, 284728994, 636922003, 1422499564, 3172350160, 7065116255, 15714769641, 34912773337]

cp's OEIS Frontend

A269083 Number of n X 2 binary arrays with some element plus some horizontally, vertically or antidiagonally adjacent neighbor totalling two not more than once.

Table of values

List of values