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A303895
Number of nX7 0..1 arrays with every element unequal to 1, 2, 3 or 4 king-move adjacent elements, with upper left element zero.
1
8, 4184, 11916, 195279, 992789, 9758243, 71307109, 596704142, 4824517709, 38791293621, 322218371259, 2587399475622, 21498304831181, 174578118724592, 1440073455933753, 11819772450712206, 97045220051756051, 800488399136803935
OFFSET
1,1
COMMENTS
Column 7 of A303896.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..1..0..1. .0..1..1..1..1..0..1. .0..0..0..1..0..1..0
..0..1..1..1..1..1..0. .0..0..0..0..0..1..0. .0..1..1..0..0..0..1
..1..1..1..1..0..0..1. .0..0..0..0..0..1..1. .1..1..1..1..0..0..0
..1..1..1..0..0..0..1. .0..1..1..0..1..1..0. .1..1..1..1..0..0..1
..1..0..0..1..0..0..1. .1..1..1..1..0..1..0. .0..1..1..0..0..1..1
CROSSREFS
Cf. A303896.
Sequence in context: A203436 A159368 A167065 * A305287 A304900 A316582
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 02 2018
STATUS
approved