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A171624 Floor(n-th nonprime / n). 1
1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

a(n)= floor(A018252(n)/A000027(n)) = floor(A018252(n)/n). Numerators of (A018252(n)/A000027(n)) in A171529(n), denominators of (A018252(n)/A000027(n)) in A171530(n).

LINKS

Table of n, a(n) for n=1..86.

FORMULA

a(n) = 1 for n >= 5.

MATHEMATICA

Module[{nn=100, np}, np=Complement[Range[nn], Prime[Range[PrimePi[nn]]]]; Floor[np/Range[Length[np]]]] (* Harvey P. Dale, Oct 28 2015 *)

CROSSREFS

Sequence in context: A204429 A086137 A085976 * A032548 A030597 A030599

Adjacent sequences:  A171621 A171622 A171623 * A171625 A171626 A171627

KEYWORD

nonn

AUTHOR

Jaroslav Krizek, Dec 13 2009

EXTENSIONS

More terms from Harvey P. Dale, Oct 28 2015

STATUS

approved

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Last modified December 9 06:36 EST 2016. Contains 278963 sequences.