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A073719
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a(n) = floor(prime(2^n)/composite(2^n)).
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0
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0, 0, 1, 2, 2, 3, 4, 5, 5, 6, 7, 8, 8, 9, 10, 11, 12, 12, 13, 14, 15, 15, 16, 17, 18, 18, 19, 20, 20, 21, 22, 23, 23, 24, 25, 26, 26, 27, 28, 28
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listen;
history;
text;
internal format)
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OFFSET
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1,4
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LINKS
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FORMULA
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MATHEMATICA
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c[x_] := FixedPoint[x + PrimePi[#] + 1 &, x]; Table[Floor[Prime[z = 2^n]/c[z]], {n, 40}] (* Jayanta Basu, Jul 08 2013 *)
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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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