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A206068
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Number of (n+1)X5 0..2 arrays with every 2X3 or 3X2 subblock having exactly three clockwise edge increases
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1
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2052, 18534, 233058, 2991276, 38532894, 496478790, 6395526408, 82373437782, 1060879148706, 13662475703964, 175948512210702, 2265887036317230, 29180261434926696, 375784836992665662, 4839370893893451258
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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) = 25*a(n-1) -206*a(n-2) +741*a(n-3) -1371*a(n-4) +1388*a(n-5) -844*a(n-6) +228*a(n-7) +4*a(n-8) for n>13
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EXAMPLE
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Some solutions for n=4
..2..1..0..1..0....0..2..1..0..2....0..1..0..2..1....0..0..2..1..2
..0..2..1..0..1....2..0..2..1..0....2..0..1..0..2....2..1..0..2..0
..1..0..2..1..2....1..2..1..2..1....0..1..0..1..0....0..2..1..0..1
..2..1..0..2..0....2..0..2..1..2....1..2..1..0..1....1..0..2..1..0
..0..2..1..0..1....0..1..0..2..1....2..0..2..1..2....0..1..0..2..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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