A293101 - cp's OEIS frontend

A293101 Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.

n	a(n)
1	0
2	0
3	9
4	42
5	150
6	596
7	2220
8	8376
9	31959
10	121768
11	465365
12	1784742
13	6865278
14	26474028
15	102325886
16	396332796
17	1538015240
18	5978805044
19	23278677150
20	90767915948
21	354389747119
22	1385333740384
23	5421345875519
24	21237273165782
25	83270840712919

[0, 0, 9, 42, 150, 596, 2220, 8376, 31959, 121768, 465365, 1784742, 6865278, 26474028, 102325886, 396332796, 1538015240, 5978805044, 23278677150, 90767915948, 354389747119, 1385333740384, 5421345875519, 21237273165782, 83270840712919]

cp's OEIS Frontend

A293101 Number of 2 X n 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 two less than the number of 0's adjacent to some 1.

Table of values

List of values