A303455 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 8192, 658204, 55681352, 4729712941, 401712282811, 34135836415352, 2900896415900109, 246526793165030703, 20950755659230072765, 1780476037311841468019, 151311828052607951348154

Offset: 1

Author

R. H. Hardin, Apr 24 2018

Keywords

• nonn

Comments

Column 7 of A303456.

Examples

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

Links

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

Crossrefs

Cf. A303456.