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A305021
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Number of nX7 0..1 arrays with every element unequal to 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
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1
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0, 702, 10487, 570806, 24498639, 1125868355, 51145342760, 2330913035532, 106184262061654, 4838827075531557, 220480153855823492, 10046790366410275173, 457802551646014275739, 20860807824396398424481
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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..1..0..1..0..1..0. .0..1..0..0..1..0..0. .0..1..1..0..1..1..1
..0..1..1..1..1..0..1. .0..1..0..1..1..1..1. .0..1..1..0..0..0..0
..0..0..1..0..0..0..1. .0..0..0..0..1..0..0. .0..0..0..0..0..1..1
..0..1..1..1..1..0..1. .0..1..1..0..1..1..1. .0..1..0..0..1..1..1
..0..1..0..0..1..1..0. .0..1..1..0..0..1..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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