A302726 Number of nX6 0..1 arrays with every element equal to 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

5, 45, 162, 689, 4505, 20842, 104969, 623549, 3195095, 16779202, 94570299, 502818683, 2684335804, 14798497776, 79585694357, 428251526577, 2337808909399, 12622803157240, 68178468555088, 370527376656027, 2003864441765404

Offset: 1

Author

R. H. Hardin, Apr 12 2018

Keywords

• nonn

Comments

Column 6 of A302728.

Examples

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

Links

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

Crossrefs

Cf. A302728.