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A302306
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Number of nX5 0..1 arrays with every element equal to 0, 1, 3 or 4 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
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1
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8, 31, 48, 194, 445, 1271, 3915, 12420, 42897, 158170, 605532, 2395817, 9709409, 39880121, 165585758, 693033415, 2914777618, 12305134022, 52090542883, 220906709231, 938079788895, 3987432050368, 16960357014483, 72175348991290
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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..1..1..0..1. .0..1..0..0..1. .0..0..1..0..1
..0..1..0..1..0. .1..0..1..0..0. .0..1..0..1..0. .0..1..0..0..1
..1..1..0..0..0. .1..0..1..0..1. .0..1..0..1..0. .0..1..0..0..0
..1..1..1..1..1. .0..0..1..0..1. .1..1..0..1..0. .0..1..1..0..1
..0..1..1..0..1. .1..0..1..0..1. .0..1..0..0..0. .0..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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