A301667 Number of nX6 0..1 arrays with every element equal to 1, 2 or 4 horizontally or vertically adjacent elements, with upper left element zero.

5, 162, 1498, 14394, 146841, 1537496, 15498505, 159497778, 1631501428, 16710326446, 171088097185, 1752145711420, 17940714321741, 183715971451846, 1881222389643034, 19263608263871012, 197257711048154849

Offset: 1

Author

R. H. Hardin, Mar 25 2018

Keywords

• nonn

Comments

Column 6 of A301669.

Examples

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

Links

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

Crossrefs

Cf. A301669.