A283783 Number of nX7 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, 2410, 336614, 30330979, 2393467823, 169720104148, 11308125156356, 719819137224851, 44286142978155009, 2653649902754828202, 155676754281056965035, 8975824198199222022171, 510082055072987791045820

Offset

1,2

Comments

Column 7 of A283784.

Links

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

Example

Some solutions for n=2
..1..1..1..0..1..1..0. .1..0..1..0..1..0..1. .1..1..1..0..0..0..0
..1..0..1..1..0..0..0. .1..1..0..1..1..0..0. .0..0..1..1..1..0..0

Crossrefs

Cf. A283784.

Sequence in context: A031727 A236038 A323271 * A260274 A376352 A234126

Adjacent sequences: A283780 A283781 A283782 * A283784 A283785 A283786

Keyword

nonn

Author

R. H. Hardin, Mar 16 2017

Status

approved