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A303020
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Number of 6Xn 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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32, 857, 5220, 24030, 160253, 1298140, 9976891, 75234550, 587492276, 4655638153, 36937598678, 293971295920, 2351936160662, 18881820084138, 151907805236940, 1224351999451973, 9884044359813506, 79891695476240047, 646370835714526370
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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..1..0. .0..0..0..1..0. .0..1..1..1..1. .0..1..0..1..0
..0..0..1..1..1. .0..1..0..1..0. .0..1..0..1..0. .0..1..1..1..0
..0..1..1..0..1. .0..0..0..1..1. .0..1..0..1..0. .0..1..0..1..1
..0..1..0..1..0. .0..1..0..0..1. .1..1..1..0..1. .0..0..0..0..0
..1..0..0..1..0. .0..1..0..1..0. .1..0..1..1..1. .0..0..0..0..1
..1..1..0..0..0. .1..1..1..1..0. .0..0..1..0..1. .1..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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