A283731 Number of 6Xn 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.

0, 824, 69972, 2391696, 85216204, 2938694472, 94357463834, 2986938408668, 93021621886856, 2846643417330828, 86214103090062714, 2587462630174734200, 77033354035819429518, 2278742112362673266988, 67033714066407408675974

Offset

1,2

Comments

Row 6 of A283726.

Links

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

Example

Some solutions for n=3
..0..0..0. .1..1..0. .0..0..0. .1..0..1. .0..0..0. .1..1..0. .0..1..1
..1..0..1. .0..1..1. .1..1..0. .1..0..1. .0..0..0. .0..0..1. .0..0..1
..1..1..0. .0..0..1. .0..1..0. .0..1..0. .0..0..0. .1..1..0. .0..0..0
..1..0..0. .0..0..1. .1..0..0. .0..1..1. .1..0..1. .0..0..0. .1..1..0
..0..1..1. .1..0..0. .1..0..1. .0..0..0. .1..1..0. .0..1..1. .0..1..1
..0..0..0. .0..0..0. .1..1..0. .1..1..1. .0..1..0. .1..0..1. .0..1..0

Crossrefs

Cf. A283726.

Sequence in context: A057002 A247922 A283201 * A236793 A051989 A237062

Adjacent sequences: A283728 A283729 A283730 * A283732 A283733 A283734

Keyword

nonn

Author

R. H. Hardin, Mar 15 2017

Status

approved