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A296826
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Number of nX7 0..1 arrays with each 1 adjacent to 2, 3 or 4 king-move neighboring 1s.
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1
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1, 1997, 60772, 1814475, 139963008, 7478283799, 364592446431, 20210620228470, 1091459884529060, 57600844878558856, 3088563860020720525, 165569854889670938167, 8839721958124786138175, 472738719925271490426923
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OFFSET
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1,2
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
..0..0..0..1..0..1..1. .0..1..0..1..1..1..1. .0..0..0..0..0..0..0
..1..1..1..1..0..0..1. .1..1..0..1..0..0..1. .1..1..0..1..1..1..1
..1..0..0..1..1..0..0. .0..0..0..1..1..1..0. .0..1..1..0..0..0..1
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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