A283949 Number of nX7 0..1 arrays with no 1 equal to more than three of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.

0, 1926, 575456, 64614384, 6763514843, 667015216686, 62944601744067, 5782000278310300, 520411514987541560, 46113717734650843082, 4036254767838742279228, 349783657626468531519474

Offset

1,2

Comments

Column 7 of A283950.

Links

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

Example

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

Crossrefs

Cf. A283950.

Sequence in context: A395210 A326018 A202051 * A133301 A258841 A099482

Adjacent sequences: A283946 A283947 A283948 * A283950 A283951 A283952

Keyword

nonn

Author

R. H. Hardin, Mar 18 2017

Status

approved