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A303015
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Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
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1
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64, 960, 5571, 79945, 970892, 9976891, 121524556, 1423906011, 16163776349, 190207010302, 2214124343835, 25650137255305, 299401227197388, 3483898291886107, 40523476862477296, 472073705798224700
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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..0..1..1. .0..1..0..1..0..1..0. .0..1..0..0..0..1..0
..0..1..0..1..0..1..0. .0..0..0..0..1..0..0. .0..1..0..1..0..1..0
..0..1..0..0..0..1..0. .0..1..0..1..1..1..0. .0..1..0..1..0..0..0
..0..1..0..1..0..1..0. .0..1..0..1..0..1..0. .0..1..0..1..0..1..0
..1..1..0..1..1..1..0. .0..1..1..1..0..0..0. .0..1..0..1..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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