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A135660 a(n) = ceiling(sqrt(n) - n^(1/3)). 15
0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,10
LINKS
MATHEMATICA
Table[Ceiling[n^(1/2) - n^(1/3)], {n, 100}] (* Vincenzo Librandi, Feb 16 2013 *)
PROG
(Magma) [Ceiling(n^(1/2) - n^(1/3)): n in [1..100]]; // Vincenzo Librandi, Feb 16 2013
CROSSREFS
Sequence in context: A243113 A258198 A204562 * A163858 A236362 A133502
KEYWORD
nonn,easy
AUTHOR
Mohammad K. Azarian, Nov 25 2007
EXTENSIONS
Changed offset from 2 to 1 by Vincenzo Librandi, Feb 16 2013
STATUS
approved

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Last modified March 19 04:26 EDT 2024. Contains 370952 sequences. (Running on oeis4.)