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A304958
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Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.
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1
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8, 928, 3917, 35441, 334906, 3174054, 30361694, 294236689, 2849022835, 27577576571, 267524005831, 2595967334283, 25167006078980, 244136931469260, 2368604689022724, 22973903107467940, 222853263910436970
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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..1..0..1..0..1..1. .0..0..1..1..1..1..0. .0..1..1..1..1..0..1
..0..1..1..1..1..1..0. .0..1..1..0..0..0..1. .0..1..1..0..1..1..1
..0..1..0..1..1..1..1. .0..0..1..1..1..0..1. .0..1..1..0..1..1..1
..0..0..1..1..1..0..0. .0..1..1..1..1..0..1. .0..1..1..1..1..1..0
..1..1..1..1..0..0..1. .0..1..0..1..1..1..1. .0..1..1..0..1..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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