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A205315
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Number of (n+1)X6 0..1 arrays with every 2X2 subblock having the same number of equal edges, and new values 0..1 introduced in row major order
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1
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488, 7784, 126536, 2068148, 33865634, 554916092, 9094954742, 149077423220, 2443638951908, 40055966781734, 656597489663162, 10762963773161732, 176426890096852634, 2891996520924867398, 47405724154180563434
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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) = 31*a(n-1) -321*a(n-2) +1569*a(n-3) -4179*a(n-4) +6420*a(n-5) -5671*a(n-6) +2668*a(n-7) -516*a(n-8)
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EXAMPLE
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Some solutions for n=4
..0..1..1..1..0..1....0..1..1..1..1..1....0..1..0..0..1..0....0..0..0..1..0..0
..1..1..0..1..0..1....1..1..0..1..0..1....1..1..0..1..1..1....1..0..1..1..1..1
..1..0..0..0..0..1....0..1..1..1..1..1....0..1..1..1..0..1....1..1..1..0..0..1
..0..0..1..0..1..1....1..1..0..0..1..0....0..1..0..0..0..1....0..1..0..0..1..1
..1..0..1..1..1..0....0..0..0..1..1..0....0..1..1..1..1..1....1..1..0..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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