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A283685
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Number of n X n 0..1 arrays with no 1 equal to more than two of its horizontal, diagonal and antidiagonal neighbors.
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0
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2, 16, 264, 15226, 2530461, 1119189256, 1496646288297, 5725555721739395, 62058786307229208212, 1952915013418224842868823, 176329484983538571638638096503
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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=4
..1..0..1..0. .1..0..0..0. .0..0..0..1. .1..1..0..0. .0..0..1..0
..1..0..0..1. .0..1..0..1. .0..1..0..0. .1..1..0..0. .0..1..0..1
..0..0..0..0. .0..0..0..1. .0..0..0..1. .0..0..0..1. .0..1..0..1
..1..0..1..0. .0..0..1..1. .0..0..0..0. .0..0..1..0. .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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