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A304766
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Number of nX7 0..1 arrays with every element unequal to 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.
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1
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0, 702, 22187, 1999511, 153265405, 12219307955, 969267512820, 77018325396680, 6119460744287122, 486255500462536848, 38638506180388225818, 3070282856537314013825, 243970256623096658549212
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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..1..0..1..0..0. .0..1..1..1..0..0..0. .0..1..1..0..0..0..1
..0..1..0..0..0..1..1. .0..1..0..0..1..1..1. .0..1..0..0..1..1..0
..0..0..0..1..1..1..0. .0..0..0..0..0..1..0. .0..0..0..0..0..1..0
..1..1..0..1..0..0..0. .1..1..0..0..1..0..1. .1..1..0..1..1..1..0
..0..0..1..1..0..1..1. .0..0..1..0..0..1..0. .0..0..1..1..0..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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