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A298327
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Number of nX7 0..1 arrays with every element equal 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, 864, 4503, 73321, 1664958, 41029614, 1019874462, 25083063173, 624245464335, 15598034954101, 388988964596716, 9711122438159184, 242494107685504393, 6055035893918431953, 151200414910757899090, 3775675375730086694210
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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=4
..0..0..1..0..1..0..0. .0..0..1..1..0..0..0. .0..1..1..1..0..0..1
..0..1..1..1..1..1..0. .0..0..0..1..1..0..0. .1..1..0..0..1..0..0
..1..1..0..0..0..1..1. .0..1..0..1..0..1..0. .0..0..1..0..1..0..1
..1..1..1..0..1..1..1. .1..1..1..0..1..1..1. .0..0..1..1..0..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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