A283856 Number of n X 7 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors.

128, 13225, 901397, 72394838, 5724272337, 449942735521, 35481195059121, 2796411775700471, 220385420596755894, 17369615762718616468, 1368959249299809499467, 107892485834872661402986

Offset

1,1

Comments

Column 7 of A283857.

Links

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

Example

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

Crossrefs

Cf. A283857.

Sequence in context: A001661 A264095 A239190 * A283414 A184760 A228985

Adjacent sequences: A283853 A283854 A283855 * A283857 A283858 A283859

Keyword

nonn

Author

R. H. Hardin, Mar 17 2017

Status

approved