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A283725
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Number of nX7 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element.
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1
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0, 4220, 369328, 25260000, 1590274565, 94357463834, 5410290101514, 302490564406270, 16600142770401845, 897968848303855396, 48020384269733267214, 2544060241155707255130, 133737173204786854881261
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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=2
..0..1..1..0..1..1..1. .0..0..1..1..1..1..0. .1..0..0..0..0..1..1
..1..0..0..0..1..0..1. .0..1..1..0..1..0..0. .1..1..1..1..0..0..0
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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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