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A283041
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Number of nX7 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element.
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1
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26, 3232, 175963, 8912378, 414085368, 18455711930, 797350288363, 33705434438284, 1401215705047092, 57496998569457406, 2334654228770351159, 93982808773859979206, 3756077506881552506247, 149195064747909416762172
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OFFSET
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1,1
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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..1..0..1..0..1..0. .0..0..0..1..0..0..1. .0..1..1..0..0..0..0
..0..1..1..0..1..0..1. .1..1..0..0..0..1..0. .0..1..0..0..0..0..0
..0..0..0..0..1..0..0. .0..0..1..0..1..1..1. .0..0..0..1..1..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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