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A132983
a(n) = ceiling(n^(1/3) + n^(1/4)).
1
2, 3, 3, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8
OFFSET
1,1
LINKS
MATHEMATICA
Table[Ceiling[Surd[n, 3]+Surd[n, 4]], {n, 80}] (* Harvey P. Dale, May 07 2014 *)
PROG
(PARI) for(n=1, 50, print1(ceil(n^(1/3) + n^(1/4)), ", ")) \\ G. C. Greubel, Sep 28 2017
CROSSREFS
KEYWORD
nonn
AUTHOR
Mohammad K. Azarian, Nov 18 2007
STATUS
approved