A297747 Number of nX6 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 1, 3 or 4 neighboring 1s.

9, 237, 2223, 28540, 462187, 6379211, 92963365, 1407868835, 20923328285, 313246086576, 4720505204979, 70997646336366, 1068901950248778, 16110948199973896, 242794944116520103, 3659521442004638378

Offset

1,1

Comments

Column 6 of A297749.

Links

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

Example

Some solutions for n=4
..1..1..0..0..0..0. .1..1..1..0..0..0. .1..1..0..0..0..0. .0..1..0..0..0..1
..0..0..0..1..0..0. .0..0..1..0..0..0. .1..0..1..0..1..1. .0..0..1..1..1..0
..0..1..0..0..1..0. .0..1..1..1..0..1. .1..0..0..0..0..0. .1..0..1..1..0..0
..0..0..1..0..0..0. .1..0..1..1..1..1. .0..1..0..0..0..0. .1..1..0..1..0..0

Crossrefs

Cf. A297749.

Sequence in context: A302914 A157569 A279492 * A211052 A085799 A278858

Adjacent sequences: A297744 A297745 A297746 * A297748 A297749 A297750

Keyword

nonn

Author

R. H. Hardin, Jan 05 2018

Status

approved