A269192 Number of nX6 0..3 arrays with some element plus some horizontally, diagonally, antidiagonally or vertically adjacent neighbor totalling three no more than once.

2592, 168252, 16629436, 1567933676, 145995171708, 13377149358556, 1209655310225276, 108189166610803900, 9588279038550679252, 843282890295576773948, 73686476215233408557636, 6403039770601949503501428

Offset: 1

Author

R. H. Hardin, Feb 20 2016

Keywords

• nonn

Comments

Column 6 of A269194.

Examples

			Some solutions for n=2
..2..3..3..1..1..1. .1..0..0..2..2..3. .0..0..0..1..0..2. .2..3..3..3..1..1
..3..2..2..3..3..3. .0..1..0..2..3..1. .1..0..0..0..0..0. .3..3..1..1..1..1
		

Links

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

Crossrefs

Cf. A269194.