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A237680
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Number of (n+1)X(3+1) 0..2 arrays colored with the upper median plus the lower median minus the minimum of every 2X2 subblock
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1
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2741, 35620, 449258, 5732688, 74265677, 959069036, 12309130146, 158172430796, 2039503492244, 26262766183068, 337868797917464, 4347180105311788, 55983639564753292, 720610706816450932, 9274854470107789578
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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=2
..1..1..2..0....2..2..1..0....0..1..1..1....0..0..0..0....2..1..0..2
..0..0..1..0....0..0..2..1....1..1..2..0....0..2..2..0....0..2..1..2
..2..0..2..2....2..1..1..1....1..2..2..2....2..2..1..1....0..2..0..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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