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A300370
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Number of nX6 0..1 arrays with every element equal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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0, 2, 8, 22, 92, 366, 1592, 6925, 36101, 161645, 762469, 3571297, 16723114, 78166439, 365870424, 1715599255, 8028145462, 37613414368, 176081584796, 824491774631, 3861712572473, 18083391708768, 84680125527458, 396550577930555
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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=5
..0..0..0..0..1..1. .0..0..1..0..0..1. .0..0..1..1..0..0. .0..0..1..1..1..1
..0..1..1..0..1..1. .0..1..1..0..1..1. .0..1..1..0..1..0. .0..0..1..0..0..1
..0..1..1..0..0..1. .1..0..0..1..0..1. .0..0..0..1..1..0. .1..1..0..1..0..1
..0..0..1..0..1..0. .1..0..1..0..0..1. .1..1..0..0..0..1. .1..0..1..1..0..1
..0..0..1..1..0..0. .1..1..1..0..1..1. .1..1..1..1..1..1. .0..0..0..0..1..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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