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A304018
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Number of nX7 0..1 arrays with every element unequal to 1, 2, 3 or 5 king-move adjacent elements, with upper left element zero.
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1
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8, 928, 2421, 16187, 87747, 488944, 2820436, 16004647, 90893514, 522170664, 2984588588, 17090064690, 97994342628, 561581968676, 3219331039992, 18459890079828, 105841123581413, 606904072842495, 3480160483828364
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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=5
..0..0..0..0..1..0..0. .0..1..1..0..1..1..0. .0..1..1..1..0..0..0
..1..0..0..1..0..1..0. .1..1..1..1..1..1..1. .0..1..1..0..0..0..1
..0..0..0..1..1..0..1. .0..1..0..1..1..1..1. .0..0..0..1..1..0..0
..1..0..0..0..1..1..0. .0..0..0..0..1..1..0. .0..0..0..0..1..1..1
..0..0..0..1..1..1..0. .1..0..1..0..1..0..0. .1..0..0..1..1..0..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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