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A135664 a(n) = ceiling(sqrt(n) - n^(1/5)). 11
0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 5, 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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,6

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

MATHEMATICA

Table[Ceiling[n^(1/2) - n^(1/5)], {n, 100}] (* Vincenzo Librandi, Feb 16 2013 *)

PROG

(MAGMA) [Ceiling(n^(1/2) - n^(1/5)): n in [1..100]]; // Vincenzo Librandi, Feb 16 2013

CROSSREFS

Cf. A000196, A048766, A134914, A135660, A135661, A135662, A135663.

Sequence in context: A085141 A082896 A079416 * A261585 A058318 A133878

Adjacent sequences:  A135661 A135662 A135663 * A135665 A135666 A135667

KEYWORD

nonn,easy

AUTHOR

Mohammad K. Azarian, Nov 25 2007

EXTENSIONS

Offset corrected by Mohammad K. Azarian, Nov 19 2008

STATUS

approved

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Last modified May 18 15:25 EDT 2021. Contains 343995 sequences. (Running on oeis4.)