A304009 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3 or 5 king-move adjacent elements, with upper left element zero.

1, 99, 99, 211, 655, 1458, 4224, 10633, 28365, 75175, 201031, 544217, 1452266, 3908208, 10505646, 28266755, 76097248, 204983456, 552420015, 1488384837, 4011805443, 10816167549, 29162780211, 78639733211, 212076547630

Offset: 1

Author

R. H. Hardin, May 04 2018

Keywords

• nonn

Comments

Column 7 of A304010.

Examples

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

Links

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

Crossrefs

Cf. A304010.