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A237843
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Number of (n+1)X(1+1) 0..2 arrays with the maximum minus the lower median of every 2X2 subblock equal
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1
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81, 369, 1697, 8451, 43061, 224559, 1184701, 6305583, 33742677, 181259783, 976153437, 5266243663, 28444748005, 153767162615, 831710048621, 4500403551647, 24358405180597, 131864496867975, 713942568166077
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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: a(n) = 10*a(n-1) -10*a(n-2) -162*a(n-3) +377*a(n-4) +892*a(n-5) -2886*a(n-6) -1748*a(n-7) +9208*a(n-8) -336*a(n-9) -12832*a(n-10) +4416*a(n-11) +6144*a(n-12) -3072*a(n-13)
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EXAMPLE
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Some solutions for n=5
..2..0....1..2....1..2....0..2....2..0....1..0....2..1....0..0....2..0....0..1
..2..1....1..2....2..0....1..2....1..1....2..2....0..1....0..1....1..2....0..1
..1..0....2..1....2..1....2..0....0..0....1..1....2..2....1..0....1..2....1..2
..2..1....0..1....1..0....1..1....0..1....2..2....0..1....2..1....1..2....1..1
..1..0....0..1....1..2....1..2....1..0....0..1....2..1....1..1....0..1....1..2
..1..0....1..2....1..0....2..0....0..0....2..1....1..0....2..2....0..1....2..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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