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A298893
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Number of nX6 0..1 arrays with every element equal to 2, 3, 5, 6 or 8 king-move adjacent elements, with upper left element zero.
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1
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0, 13, 11, 80, 579, 2963, 12224, 72620, 426475, 2284203, 12768382, 72904621, 409673880, 2298677918, 13008113489, 73461302729, 414141245069, 2338885431088, 13210876247129, 74582366744334, 421146376787631, 2378532739728979
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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=7
..0..0..0..0..1..1. .0..0..1..0..0..1. .0..0..0..1..1..0. .0..0..0..1..1..1
..0..1..1..1..0..1. .0..1..1..0..1..1. .0..0..0..1..0..0. .0..0..0..1..1..1
..1..0..1..0..0..1. .0..1..0..0..0..0. .1..1..1..1..1..1. .1..1..1..1..1..1
..0..1..0..1..1..1. .1..0..0..0..0..0. .1..1..1..1..1..1. .1..1..1..0..0..0
..0..0..0..0..0..0. .0..1..0..0..0..0. .1..1..1..1..1..1. .1..1..1..0..0..0
..0..1..0..0..0..0. .0..1..1..0..1..1. .1..1..1..1..1..1. .0..0..1..1..1..1
..1..1..0..0..0..0. .0..0..1..0..0..1. .1..1..1..1..1..1. .0..0..1..1..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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