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A236804
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Number of (n+1)X(3+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock equal
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3
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1033, 8825, 85929, 929447, 9558409, 107087939, 1117775361, 12821027315, 135199336873, 1580326999835, 16792477473969, 199287485892947, 2129881236360889, 25583932979862059, 274630528704260481
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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) = 24*a(n-1) -55*a(n-2) -2772*a(n-3) +26568*a(n-4) -71616*a(n-5) -74996*a(n-6) +644112*a(n-7) -762032*a(n-8) -588288*a(n-9) +1612416*a(n-10) -783360*a(n-11)
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EXAMPLE
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Some solutions for n=3
..2..2..1..1....0..0..0..2....0..1..2..1....2..0..1..0....2..1..2..2
..2..1..1..0....0..1..0..1....0..2..2..0....1..0..2..0....0..2..2..1
..1..1..0..0....0..0..2..0....1..0..1..2....1..1..0..1....1..2..1..1
..1..0..0..1....2..1..0..1....0..2..0..2....1..2..2..0....1..1..1..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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