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A304930
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Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 5 or 7 king-move adjacent elements, with upper left element zero.
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1
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21, 237, 186, 842, 2265, 6426, 15993, 42032, 107527, 294610, 802939, 2150494, 5755142, 15441423, 41220407, 110573603, 297147846, 796997468, 2138394333, 5740020020, 15394935940, 41303582771, 110856414628, 297465011704
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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..1..1. .0..0..0..0..0..1..1. .0..0..0..0..0..0..0
..1..1..1..1..1..1..1. .0..0..0..0..0..0..1. .0..0..0..0..0..0..1
..1..1..1..1..1..1..1. .0..0..0..0..0..0..0. .0..0..0..0..0..0..0
..0..1..1..1..1..1..1. .0..0..0..0..0..0..0. .1..0..0..0..0..0..0
..0..0..1..1..0..1..1. .0..0..0..0..0..1..0. .1..1..0..0..0..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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