A283571 Number of nX7 0..1 arrays with no 1 equal to more than one of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.

26, 2832, 104464, 3890056, 129527524, 4173039716, 129997769458, 3965206666608, 118919078661476, 3520469545329364, 103128721861954074, 2995091644500263428, 86357662212925835570, 2474720063522591410712, 70543862532039328231208

Offset: 1

Author

R. H. Hardin, Mar 11 2017

Keywords

• nonn

Comments

Column 7 of A283572.

Examples

			Some solutions for n=3
..0..0..1..0..1..1..1. .0..1..0..0..0..0..1. .0..0..0..0..0..0..0
..0..0..0..0..0..0..0. .0..0..0..1..1..0..1. .1..0..0..0..0..1..0
..1..1..0..1..1..0..0. .1..0..1..0..1..0..0. .0..1..1..0..0..0..0
		

Links

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

Crossrefs

Cf. A283572.