A302211 Number of n X 7 0..1 arrays with every element equal to 0, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

1, 123, 72, 424, 1868, 11170, 55922, 291320, 1544411, 8168814, 43135601, 228337677, 1208744793, 6398223796, 33881994478, 179433657982, 950232876834, 5032989751367, 26658489563077, 141204904014504, 747985019374304

Offset: 1

Author

R. H. Hardin, Apr 03 2018

Keywords

• nonn

Comments

Column 7 of A302212.

Examples

			Some solutions for n=5
..0..0..1..1..0..0..0. .0..1..1..0..0..1..1. .0..1..1..1..0..0..0
..0..0..1..1..0..0..1. .1..1..0..0..1..1..0. .1..1..0..0..1..0..0
..1..0..0..1..1..0..1. .0..1..1..0..1..1..0. .0..1..1..0..1..1..1
..0..0..1..1..0..0..1. .0..1..1..0..0..1..1. .0..1..0..0..0..1..0
..1..0..0..1..1..0..0. .1..1..0..0..0..1..1. .1..1..1..0..0..1..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..199

Crossrefs

Cf. A302212.