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A283492
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Number of nX6 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors, with the exception of exactly one element.
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1
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0, 312, 47712, 2836520, 173139952, 9816981756, 536229705204, 28589370541536, 1495349029171972, 77085183211404184, 3927954723497651964, 198272030861373733756, 9930061632056145835716, 494048861047645225914508
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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
..1..0..0..0..0..1. .0..0..1..1..1..0. .0..1..1..0..1..1. .1..1..0..0..0..0
..1..0..1..1..1..1. .0..1..1..0..1..0. .0..0..1..0..1..1. .1..1..0..0..0..1
..1..1..1..0..1..0. .1..0..1..1..0..0. .0..1..1..1..0..0. .1..0..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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