A300643 Number of nX5 0..1 arrays with every element equal to 2, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

0, 9, 30, 316, 2998, 28089, 268615, 2552014, 24338903, 231985285, 2211326264, 21081277233, 200957956858, 1915723519711, 18262175095417, 174090604742721, 1659575837493437, 15820464143773812, 150813856777262673

Offset: 1

Author

R. H. Hardin, Mar 10 2018

Keywords

• nonn

Comments

Column 5 of A300646.

Examples

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

Links

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

Crossrefs

Cf. A300646.