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A285745
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Number of n X 3 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.
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1
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1, 8, 105, 550, 5105, 30918, 265920, 1773432, 14632372, 103605826, 834224969, 6128787272, 48666035225, 365893476096, 2883831290602, 22005412864334, 172812531531152, 1331535174196624, 10442072847350585, 80985489140322402
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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=4
..0..0..0. .1..1..1. .1..1..0. .0..0..1. .0..1..1. .0..0..0. .1..0..1
..1..1..0. .0..0..0. .1..0..0. .0..1..0. .1..1..1. .0..1..1. .0..0..0
..1..0..1. .0..0..0. .0..0..0. .1..0..1. .1..1..0. .1..0..1. .0..0..0
..1..0..0. .0..0..1. .1..0..0. .0..0..1. .0..0..0. .0..0..1. .1..0..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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