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A236590
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Number of (n+1)X(2+1) 0..3 arrays colored with the maximum plus the minimum minus the upper median minus the lower median of every 2X2 subblock
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1
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2968, 80008, 2181116, 59464564, 1618144324, 44032289456, 1198678030904, 32632424118312, 888260075143676, 24178458609189628, 658161603799159464, 17915900619841392804, 487684497575036800836, 13275130575831961753824
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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
..2..0..0....0..2..0....3..2..2....2..1..1....1..2..1....1..0..0....0..3..3
..3..2..0....1..3..3....0..3..0....2..2..0....1..3..3....1..3..3....2..1..0
..0..3..0....3..0..0....1..0..3....3..2..3....3..3..3....3..1..2....0..2..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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