A301398 Number of nX6 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, 19, 156, 2619, 49325, 885003, 16325745, 299552320, 5507220522, 101241811692, 1861266294856, 34219577018840, 629127370642307, 11566583462993881, 212652959829786846, 3909650837047832782, 71879414458502966455

Offset: 1

Author

R. H. Hardin, Mar 20 2018

Keywords

• nonn

Comments

Column 6 of A301400.

Examples

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

Links

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

Crossrefs

Cf. A301400.