A303039 Number of nX7 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

21, 363, 360, 2926, 11079, 59654, 345668, 2060154, 13122422, 89037375, 632329265, 4677904112, 35799149696, 280072132889, 2226022479526, 17895152751103, 144903511517451, 1178993189869482, 9624601342853800, 78735791021587131

Offset: 1

Author

R. H. Hardin, Apr 17 2018

Keywords

• nonn

Comments

Column 7 of A303040.

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210

Crossrefs

Cf. A303040.