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A171627 Ceiling(n-th composite/n). 0
4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Ceiling(A002808(n)/A000027(n)). Numerators of (A002808(n)/A000027(n)) in A171527(n), denominators of (A002808(n)/A000027(n)) in A171528(n).

LINKS

Table of n, a(n) for n=1..50.

FORMULA

a(n) = A171623(n) + 1 for n >= 8.

MATHEMATICA

Module[{nn=80, prpi, comps}, prpi=PrimePi[nn]; comps=Complement[Rest[ Range[nn+prpi+1]], Prime[Range[prpi]]]; Ceiling[Last[#]/First[#]]&/@ Thread[{Range[nn], comps}]] (* Harvey P. Dale, Jun 03 2012 *)

CROSSREFS

Sequence in context: A305743 A117691 A243564 * A239884 A143487 A031350

Adjacent sequences:  A171624 A171625 A171626 * A171628 A171629 A171630

KEYWORD

nonn

AUTHOR

Jaroslav Krizek, Dec 13 2009

STATUS

approved

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Last modified October 28 10:22 EDT 2020. Contains 338053 sequences. (Running on oeis4.)