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A304703
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Number of nX7 0..1 arrays with every element unequal to 1, 2, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
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1
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8, 306, 201, 3055, 19701, 296646, 3510334, 37931518, 611105804, 7863857781, 97427633369, 1442412206399, 18997425894763, 248683605318596, 3505342390311524, 46717213252442632, 624509190471187783
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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..1..0..1. .0..0..1..0..1..0..0. .0..0..0..0..0..1..0
..1..0..1..1..0..1..1. .1..0..0..0..0..1..0. .1..1..0..0..1..0..0
..0..0..0..0..0..1..0. .0..0..0..1..1..0..1. .1..1..1..1..1..1..0
..0..1..1..1..1..0..1. .0..0..1..0..1..0..0. .0..0..0..0..0..0..1
..0..1..1..0..1..1..1. .0..1..0..0..0..1..0. .1..1..0..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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