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A304550
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Number of n X 7 0..1 arrays with every element unequal to 0, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.
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1
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1, 908, 2822, 72713, 1061345, 16063367, 274090332, 4486557450, 72881502770, 1210303857062, 19895930906948, 327540952049656, 5404014762291029, 89033985729142356, 1467427990298534936, 24190936987126912330
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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..0..0..1..0..0. .0..1..0..1..1..1..0. .0..0..1..1..1..0..1
..1..0..0..1..1..1..1. .0..1..1..0..0..0..1. .1..1..0..1..0..1..0
..0..0..1..1..1..0..0. .1..1..0..0..0..1..0. .0..0..0..0..1..1..0
..1..1..0..1..1..0..1. .0..0..1..0..0..1..0. .1..1..0..1..1..0..1
..0..0..0..0..0..1..0. .0..0..1..0..0..1..0. .0..0..1..0..1..1..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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