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A281164
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Number of nX7 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
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1
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0, 1388, 84443, 619502, 4098895, 22796763, 111826676, 511077328, 2213577238, 9219387478, 37243761722, 146843636089, 567586366405, 2158163009599, 8094169842566, 30006682413781, 110139856305082, 400800296115796
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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
..0..1..0..1..1..0..1. .0..1..0..0..0..1..0. .0..0..1..1..0..1..0
..1..1..0..1..0..1..1. .0..1..0..1..1..0..1. .1..0..0..1..0..1..1
..0..0..1..1..0..1..0. .1..0..1..0..1..1..0. .1..1..1..0..1..1..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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