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A306165
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Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
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1
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64, 101, 523, 2966, 19176, 128710, 842280, 5553315, 36528087, 240890311, 1589377780, 10478113962, 69104073784, 455793498250, 3005985844063, 19825140803190, 130753850843144, 862362210105594, 5687526991833846
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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..0..0..1..0..0. .0..0..0..1..0..1..0. .0..0..1..0..0..1..0
..0..0..0..0..0..0..0. .0..0..0..0..0..0..0. .0..0..0..0..0..0..0
..0..0..1..0..0..0..0. .0..0..0..0..0..0..0. .0..0..0..1..0..0..0
..0..1..0..0..0..0..1. .1..0..0..1..1..0..0. .0..0..1..0..0..1..0
..0..0..0..0..0..0..0. .0..0..0..0..0..0..0. .0..0..0..0..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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