A297549 Number of 6Xn 0..1 arrays with every 1 horizontally, diagonally or antidiagonally adjacent to 2 or 3 neighboring 1s.

1, 31, 2050, 13248, 94647, 3015179, 67372651, 916902295, 14467301940, 290169660945, 5329084696567, 89381913856892, 1564002749882255, 28438920688062707, 506516973635082252, 8886666042271930829

Offset: 1

Author

R. H. Hardin, Dec 31 2017

Keywords

• nonn

Comments

Row 6 of A297544.

Examples

			Some solutions for n=5
..0..1..1..0..0. .0..1..0..0..0. .0..0..1..1..0. .0..0..1..1..0
..0..0..1..1..0. .1..1..1..0..0. .0..1..1..0..0. .0..1..1..0..0
..1..1..0..0..0. .0..1..0..0..0. .0..0..1..1..0. .0..1..1..0..0
..0..1..1..0..0. .1..1..0..0..0. .0..0..0..1..0. .1..0..0..0..0
..0..0..1..0..0. .1..1..1..0..0. .0..0..0..1..1. .0..1..0..1..1
..0..1..1..1..0. .0..0..0..0..0. .0..0..1..1..0. .0..0..1..1..1
		

Links

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

Crossrefs

Cf. A297544.