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A062838 Cubes of squarefree numbers. 5
1, 8, 27, 125, 216, 343, 1000, 1331, 2197, 2744, 3375, 4913, 6859, 9261, 10648, 12167, 17576, 24389, 27000, 29791, 35937, 39304, 42875, 50653, 54872, 59319, 68921, 74088, 79507, 97336, 103823, 132651, 148877, 166375, 185193, 195112, 205379, 226981, 238328 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A055229(a(n)) = A005117(n) and A055229(m) < A005117(n) for m < a(n). - Reinhard Zumkeller, Apr 09 2010

LINKS

Vincenzo Librandi and T. D. Noe, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = A005117(n)^3. - R. J. Mathar, Dec 03 2015

MATHEMATICA

Select[Range[70], SquareFreeQ]^3 (* Harvey P. Dale, Jul 20 2011 *)

PROG

(PARI) for(n=1, 35, if(issquarefree(n), print(n*n^2)))

(PARI) a(n) = my(m, c); if(n<=1, n==1, c=1; m=1; while(c<n, m++; if(issquarefree(m), c++)); m^3); \\  Altug Alkan, Dec 03 2015

CROSSREFS

Cf. A005117.

Sequence in context: A030160 A030162 A153147 * A240859 A277047 A046452

Adjacent sequences:  A062835 A062836 A062837 * A062839 A062840 A062841

KEYWORD

nonn,easy

AUTHOR

Jason Earls, Jul 21 2001

EXTENSIONS

More terms from Dean Hickerson, Jul 24 2001

More terms from Vladimir Joseph Stephan Orlovsky, Aug 15 2008

STATUS

approved

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Last modified September 20 06:19 EDT 2019. Contains 327212 sequences. (Running on oeis4.)