A301399 Number of nX7 0..1 arrays with every element equal to 2, 3, 4, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

0, 41, 554, 15538, 521514, 16325745, 528025038, 16971131642, 546618326745, 17603736711807, 566956049378525, 18260390329067940, 588124654381330816, 18942222518786814929, 610087935644210871329, 19649617831383406991765

Offset: 1

Author

R. H. Hardin, Mar 20 2018

Keywords

• nonn

Comments

Column 7 of A301400.

Examples

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

Links

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

Crossrefs

Cf. A301400.