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A302419
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Number of 6Xn 0..1 arrays with every element equal to 0, 1, 2 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
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1
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32, 857, 1431, 3548, 16123, 84581, 306064, 1137414, 4669030, 19117072, 75529085, 300884302, 1210571319, 4856093280, 19423290085, 77795634366, 311818814702, 1249258281500, 5004132992012, 20048293318277, 80323158073845
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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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FORMULA
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Empirical recurrence of order 79 (see link above)
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EXAMPLE
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Some solutions for n=5
..0..0..1..1..0. .0..1..0..1..1. .0..1..1..0..0. .0..1..1..0..0
..1..0..1..0..0. .0..0..1..1..0. .0..0..1..1..1. .0..0..1..0..0
..1..0..1..0..1. .0..1..0..1..0. .1..0..1..0..1. .1..0..1..1..1
..1..0..1..0..0. .0..1..0..0..0. .1..0..1..0..1. .1..0..1..1..1
..0..0..1..1..1. .0..0..0..1..1. .1..0..1..0..1. .1..0..1..0..0
..0..1..1..0..1. .1..1..0..1..0. .1..0..1..0..1. .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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