A300774 Number of nX6 0..1 arrays with every element equal to 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

0, 19, 102, 735, 10374, 116954, 1413931, 17336190, 210669938, 2579232344, 31507335039, 385235115962, 4709579663351, 57576031578161, 703919626655464, 8605843851625144, 105213106646598954, 1286307937687623392

Offset: 1

Author

R. H. Hardin, Mar 12 2018

Keywords

• nonn

Comments

Column 6 of A300776.

Examples

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

Links

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

Crossrefs

Cf. A300776.