A283948 Number of nX6 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, 408, 69468, 4242700, 241796070, 13010689912, 669777003928, 33569301548620, 1648776677140184, 79729758214875372, 3808601116917731110, 180135397053029043408, 8450230315310614813812, 393679533146957194152168

Offset

1,2

Comments

Column 6 of A283950.

Links

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

Example

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

Crossrefs

Cf. A283950.

Sequence in context: A285767 A282479 A163024 * A069298 A255797 A345544

Adjacent sequences: A283945 A283946 A283947 * A283949 A283950 A283951

Keyword

nonn

Author

R. H. Hardin, Mar 18 2017

Status

approved