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A300679
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Number of nX5 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
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1
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1, 13, 8, 80, 398, 1382, 6686, 30218, 131674, 611429, 2764144, 12588291, 57406818, 261411829, 1191585608, 5430308271, 24749976109, 112805678823, 514149652500, 2343435239710, 10681117766000, 48683513703774, 221894678763366
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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..0..0..0..1. .0..0..0..1..1. .0..0..0..0..1. .0..0..0..1..0
..0..1..0..1..1. .0..1..0..1..0. .0..1..0..1..1. .0..1..0..0..0
..0..0..1..0..1. .1..1..0..1..1. .1..1..1..0..0. .1..1..1..1..1
..0..1..1..1..0. .1..0..1..0..1. .0..0..0..1..0. .0..0..1..0..1
..0..0..0..0..0. .0..0..1..1..0. .0..1..0..0..0. .0..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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