A302222 Number of nX6 0..1 arrays with every element equal to 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

5, 537, 3425, 38736, 338204, 3420704, 32181643, 310963650, 2973099477, 28539661221, 273649285789, 2623829240629, 25163515492994, 241281374262345, 2313955414338689, 22188973218594562, 212790004250803955

Offset: 1

Author

R. H. Hardin, Apr 03 2018

Keywords

• nonn

Comments

Column 6 of A302224.

Examples

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

Links

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

Crossrefs

Cf. A302224.