A300369 Number of nX5 0..1 arrays with every element equal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

0, 3, 3, 4, 32, 92, 270, 1262, 3561, 13976, 48859, 173602, 622502, 2233811, 7882027, 28343929, 100832747, 360076171, 1284751998, 4584944102, 16356781324, 58381988677, 208293028674, 743376640816, 2652427350327, 9465170814378

Offset: 1

Author

R. H. Hardin, Mar 04 2018

Keywords

• nonn

Comments

Column 5 of A300372.

Examples

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

Links

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

Crossrefs

Cf. A300372.