A302882 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 86, 536, 2938, 23037, 320405, 3780984, 44148194, 588417750, 8234641702, 109042468735, 1419909251038, 19277374758266, 264983349356693, 3552177386205259, 47276138831810619, 639816255891989376

Offset: 1

Author

R. H. Hardin, Apr 15 2018

Keywords

• nonn

Comments

Row 7 of A302877.

Examples

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

Links

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

Crossrefs

Cf. A302877.