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A304696
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Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.
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1
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8, 928, 9573, 124399, 1894297, 27769991, 389403912, 5581948043, 80739890302, 1161245568542, 16657035643006, 239529891739743, 3446569197031058, 49545001051376273, 712194629192265637, 10241055298106790590
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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..1..1..0..0..0. .0..0..1..1..1..1..1. .0..1..0..1..1..0..0
..0..0..1..0..0..0..1. .0..1..1..1..0..1..0. .0..0..0..0..1..0..1
..0..0..0..0..0..0..0. .0..0..1..0..0..0..0. .0..0..0..0..0..0..0
..0..1..1..0..0..1..1. .0..0..0..0..0..0..0. .0..1..0..1..0..0..0
..0..1..1..0..0..0..1. .1..0..0..1..0..0..1. .1..0..1..0..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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