A283097 Number of nX5 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements.

2, 142, 4607, 107007, 2231690, 42681282, 774403237, 13508097744, 228643318057, 3779831485411, 61301958031506, 978593190144974, 15415280790236212, 240088085281666402, 3702829542983428526, 56621929465854143683

Offset

1,1

Comments

Column 5 of A283100.

Links

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

Example

Some solutions for n=4
..1..1..1..1..0. .0..0..1..1..1. .0..0..1..1..1. .0..1..0..1..1
..0..0..1..0..1. .0..0..0..1..0. .0..0..0..0..1. .0..0..0..0..1
..0..1..0..0..0. .0..0..1..0..1. .0..1..0..1..0. .0..0..1..1..0
..1..0..0..1..1. .0..0..0..1..1. .1..0..0..1..0. .1..0..1..0..0

Crossrefs

Cf. A283100.

Sequence in context: A356747 A215187 A101827 * A371588 A304582 A320061

Adjacent sequences: A283094 A283095 A283096 * A283098 A283099 A283100

Keyword

nonn

Author

R. H. Hardin, Feb 28 2017

Status

approved