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A205317
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Number of (n+1)X8 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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4376, 161928, 6150512, 235994088, 9094954742, 351210375464, 13574876544398, 524918733085720, 20301876944832818, 785274659708798830, 30375704525543067782, 1175006427763697066728, 45452565752953792429196
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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) = 106*a(n-1) -4578*a(n-2) +110127*a(n-3) -1685691*a(n-4) +17662632*a(n-5) -132490685*a(n-6) +732439565*a(n-7) -3041749572*a(n-8) +9607185471*a(n-9) -23244897123*a(n-10) +43214022033*a(n-11) -61676422325*a(n-12) +67255934696*a(n-13) -55515488409*a(n-14) +34166147646*a(n-15) -15313024644*a(n-16) +4816467696*a(n-17) -999456992*a(n-18) +121777664*a(n-19) -6527616*a(n-20)
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EXAMPLE
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Some solutions for n=4
..0..0..0..0..1..1..0..0....0..0..1..0..1..1..1..1....0..1..0..1..1..1..0..0
..1..0..1..0..1..0..0..1....0..1..1..1..1..0..1..0....1..1..1..1..0..0..0..1
..1..0..0..0..1..0..1..1....1..1..0..0..0..0..1..1....1..0..0..0..0..1..0..0
..0..0..1..1..1..0..0..0....0..0..0..1..0..1..1..0....0..0..1..0..1..1..0..1
..0..1..1..0..0..0..1..0....0..1..1..1..0..0..1..0....1..0..1..1..1..0..0..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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