A135660 - OEIS

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A135660

a(n) = ceiling(sqrt(n) - n^(1/3)).

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

Vincenzo Librandi, Table of n, a(n) for n = 1..999

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

Cf. A000196, A048766, A134914.

Sequence in context: A243113 A258198 A204562 * A163858 A236362 A133502