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A305487
Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 6 or 8 king-move adjacent elements, with upper left element zero.
1
5, 157, 295, 125, 7007, 23229, 52124, 581383, 2463954, 8570618, 56143574, 267901337, 1116868133, 6024191561, 29624539835, 134241410418, 674874922277, 3322616624721, 15652901052092, 76798796724976, 376381323915795
OFFSET
1,1
COMMENTS
Column 6 of A305489.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..0..0..1. .0..1..1..1..0..1. .0..1..0..0..1..0. .0..1..0..0..0..0
..0..0..1..0..1..0. .1..1..1..0..0..1. .1..1..1..0..1..1. .1..0..1..1..1..1
..0..0..0..0..0..1. .1..1..1..1..1..1. .1..1..1..1..1..1. .1..1..1..1..1..1
..0..1..0..0..0..1. .1..0..1..1..1..1. .1..0..1..1..0..1. .1..1..0..1..1..0
..0..1..1..0..0..1. .0..1..0..0..0..0. .0..0..1..0..0..1. .1..0..0..1..0..0
CROSSREFS
Cf. A305489.
Sequence in context: A032391 A139978 A304147 * A305087 A316738 A009082
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 02 2018
STATUS
approved