A301910 Number of 6Xn 0..1 arrays with every element equal to 0, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.

32, 1, 43, 26, 64, 532, 1934, 14860, 86638, 568382, 4029337, 27834481, 195991786, 1379526983, 9716584311, 68484812620, 482477672626, 3399467195980, 23952754983718, 168772425373008, 1189219611175938, 8379671227164002

Offset: 1

Author

R. H. Hardin, Mar 28 2018

Keywords

• nonn

Comments

Row 6 of A301906.

Examples

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

Links

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

Crossrefs

Cf. A301906.