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A105642 Composite nonsquares and noncubes. 1
6, 10, 12, 14, 15, 18, 20, 21, 22, 24, 26, 28, 30, 32, 33, 34, 35, 38, 39, 40, 42, 44, 45, 46, 48, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95, 96, 98, 99, 102, 104, 105, 106, 108 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..68.

FORMULA

a(n) = n + O(n/log n). - Charles R Greathouse IV, Oct 19 2015

MATHEMATICA

nn=200; Complement[Range[nn], Prime[Range[PrimePi[nn]]], Range[Sqrt[nn]]^2, Range[nn^(1/3)]^3]  (* Harvey P. Dale, Jan 26 2011 *)

PROG

(PARI) is(n)=n>1 && !isprime(n) && !issquare(n) && !ispower(n, 3) \\ Charles R Greathouse IV, Oct 19 2015

CROSSREFS

Cf. A007774, A024619, A030231, A056760, A064040, A084227, A100658.

Sequence in context: A317719 A329367 A325265 * A064040 A168638 A024619

Adjacent sequences:  A105639 A105640 A105641 * A105643 A105644 A105645

KEYWORD

nonn

AUTHOR

Zak Seidov, May 03 2005

STATUS

approved

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Last modified November 27 12:23 EST 2020. Contains 338683 sequences. (Running on oeis4.)