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A236090
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Number of (n+1)X(2+1) 0..2 arrays colored with the difference of the maximum and the upper median in each 2X2 subblock
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1
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344, 1960, 10912, 59398, 321368, 1787690, 9900936, 54118764, 295217284, 1633131298, 9015043100, 49376234152, 270394664828, 1491691040990, 8218703963596, 45077289476146, 247327095667008, 1362361458781028
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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) = 28*a(n-3) +591*a(n-4) +642*a(n-5) +1360*a(n-6) +3146*a(n-7) -10200*a(n-8) -7734*a(n-9) +9306*a(n-10) -5336*a(n-11) +14804*a(n-12) +19462*a(n-13) -6478*a(n-14) -2372*a(n-15) +3016*a(n-16) +2772*a(n-17) +24*a(n-18) -582*a(n-19) -53*a(n-20) for n>22
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EXAMPLE
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Some solutions for n=4
..1..1..1....0..2..0....0..1..0....1..0..0....2..0..0....0..2..2....0..0..0
..2..1..0....0..1..2....2..0..1....1..1..2....1..2..1....1..0..2....1..1..2
..1..2..0....1..0..1....2..0..2....0..2..1....0..1..2....1..1..0....1..2..1
..1..0..0....2..0..1....1..0..2....0..0..1....1..0..0....2..1..1....2..0..1
..1..1..2....2..0..2....0..1..0....2..1..1....2..0..2....2..1..2....0..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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