A283788 Number of 5Xn 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly two elements.

0, 49, 7298, 174447, 4588054, 109281786, 2393467823, 50718879656, 1038296709087, 20702792249318, 404624633709800, 7774247083948569, 147277082569384849, 2756903798082287236, 51077171924408161253, 937879908134774022823

Offset

1,2

Comments

Row 5 of A283784.

Links

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

Example

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

Crossrefs

Cf. A283784.

Sequence in context: A130416 A006692 A304313 * A206247 A180273 A351598

Adjacent sequences: A283785 A283786 A283787 * A283789 A283790 A283791

Keyword

nonn

Author

R. H. Hardin, Mar 16 2017

Status

approved