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A295212
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Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 2 or 3 1s.
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1
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1, 69, 1162, 27208, 775547, 18444470, 444447937, 10896495280, 265837272259, 6495847859424, 158822121967384, 3880909066698091, 94831337129003187, 2317336322758510242, 56626572178295328836, 1383738694001835856870
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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=4
..0..1..1..1..1..0..0. .1..1..1..0..0..0..0. .1..1..0..0..1..1..1
..1..1..1..0..1..0..0. .1..0..1..1..1..1..0. .1..1..0..1..1..0..1
..1..0..1..0..1..1..1. .1..1..1..0..0..1..1. .0..1..1..1..1..0..1
..1..1..1..0..0..1..1. .0..1..1..0..0..1..1. .0..1..1..0..1..1..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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