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A207053
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Number of nX4 0..3 arrays avoiding the pattern z-1 z-1 z in any row or column
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1
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232, 53824, 10372376, 1980856064, 377752048996, 72028285835462, 13734678041147631, 2619005062646929790, 499402241884398131528, 95227913846774233866769, 18158405728633112095516244
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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=4
..0..0..2..2....2..0..1..0....2..2..1..0....1..0..0..0....1..3..2..1
..0..3..3..0....2..0..1..2....3..2..2..0....0..3..1..2....1..1..0..3
..2..0..1..2....1..3..0..0....2..0..3..0....1..0..1..3....3..3..3..0
..1..1..0..0....1..3..2..2....1..2..3..2....1..3..3..1....0..2..1..3
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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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