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A237030
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Number of (n+1)X(3+1) 0..2 arrays with the maximum of every 2X2 subblock equal
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1
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4042, 221994, 11703666, 638436002, 34552648978, 1877852845426, 101931021677874, 5535866559864146, 300598632229153394, 16323738622843292626, 886423519070746122162, 48135683617041421708818
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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) = 44*a(n-1) +881*a(n-2) -15698*a(n-3) -113114*a(n-4) +890992*a(n-5) +3248928*a(n-6) -2915328*a(n-7) -5741568*a(n-8) +4644864*a(n-9)
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EXAMPLE
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Some solutions for n=1
..0..1..2..1....0..2..0..2....0..2..0..2....1..2..0..0....1..0..2..2
..1..2..0..1....1..0..0..1....0..1..1..2....0..1..2..1....1..2..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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