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A237077
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Number of (n+1)X(1+1) 0..2 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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81, 484, 2928, 17644, 106528, 641736, 3871696, 23356112, 140860224, 849369952, 5123163584, 30900608576, 186358734592, 1123916940160, 6778707349760, 40883900374784, 246573431346176, 1487114080196096, 8969081447668736
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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) = 76*a(n-3) +544*a(n-4) +1272*a(n-5) +3512*a(n-6) +3568*a(n-7) -2944*a(n-8) -4864*a(n-9) -6144*a(n-10)
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EXAMPLE
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Some solutions for n=5
..1..1....2..1....0..2....1..1....0..2....2..1....0..1....2..0....0..1....0..0
..2..0....1..1....1..1....0..2....2..2....2..2....0..1....2..0....0..0....0..2
..0..1....0..2....2..1....2..2....1..1....1..1....2..0....0..1....2..0....2..0
..0..1....0..1....0..1....0..1....1..2....2..1....2..0....1..1....1..2....1..0
..2..0....1..2....0..0....2..0....0..2....1..2....2..2....2..2....1..0....1..1
..0..2....0..2....0..0....2..1....2..0....0..2....1..1....2..1....2..2....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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