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A305014
Number of nX7 0..1 arrays with every element unequal to 1, 2, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
1
8, 306, 455, 2200, 30457, 119835, 640900, 6449924, 41160483, 271320922, 2274614514, 17677895427, 132521311532, 1072936215193, 8750546462598, 69515327539782, 564697055232340, 4648309561233697, 37766275954736455
OFFSET
1,1
COMMENTS
Column 7 of A305015.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..0..0..0. .0..0..0..0..1..0..0. .0..0..1..0..0..1..0
..1..0..0..0..0..0..1. .0..1..0..1..0..0..1. .1..0..0..0..0..0..0
..0..0..0..0..0..0..0. .1..0..0..0..0..0..0. .0..0..0..0..1..0..0
..1..0..0..1..0..1..0. .0..0..0..0..0..0..0. .1..0..0..1..0..0..1
..0..0..1..0..0..0..1. .0..1..0..1..0..1..0. .1..0..0..0..0..0..0
CROSSREFS
Cf. A305015.
Sequence in context: A305451 A304703 A316454 * A316647 A316175 A317457
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 23 2018
STATUS
approved