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A236014
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Number of (n+1)X(4+1) 0..2 arrays colored with the sum of the maximum and minimum values of each 2X2 subblock
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1
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4672, 12544, 34288, 95848, 267424, 771564, 2218212, 6382872, 18265360, 52177252, 149258712, 427853252, 1226410112, 3513633704, 10058786964, 28806493432, 82512239868, 236383009160, 677059152856, 1939300994548, 5554357282184
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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) = 4*a(n-2) +3*a(n-3) +24*a(n-4) +21*a(n-5) +28*a(n-6) -64*a(n-7) -199*a(n-8) -396*a(n-9) -578*a(n-10) -30*a(n-11) -136*a(n-12) -192*a(n-13) for n>16
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EXAMPLE
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Some solutions for n=4
..1..2..0..1..1....2..1..1..0..2....0..1..2..1..1....1..0..0..0..2
..1..1..0..1..1....1..1..1..0..0....2..1..1..0..0....1..0..0..1..2
..1..1..1..2..2....1..1..2..1..0....2..1..1..1..2....2..1..1..2..2
..0..1..1..1..0....0..0..1..2..2....1..0..1..1..1....2..1..1..1..0
..1..2..1..1..0....2..0..0..2..2....0..0..2..1..0....1..0..1..1..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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