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%I #16 Sep 08 2022 08:45:32
%S 0,1,1,2,3,3,4,4,5,6,7,7,8,9,9,10,11,12,12,13,14,15,15,16,17,18,18,19,
%T 20,21,22,22,23,24,25,26,26,27,28,29,30,30,31,32,33,34,34,35,36,37,38,
%U 39,39,40,41,42,43,44,44,45,46
%N a(n) = ceiling(n - n^(2/3)).
%H Vincenzo Librandi, <a href="/A135671/b135671.txt">Table of n, a(n) for n = 1..1000</a>
%t Table[Ceiling[n - n^(2/3)], {n, 100}] (* _Vincenzo Librandi_, Feb 16 2013 *)
%o (Magma) [Ceiling(n - n^(2/3)): n in [1..100]]; // _Vincenzo Librandi_, Feb 16 2013
%o (PARI) a(n)=n-sqrtnint(n^2,3) \\ _Charles R Greathouse IV_, Sep 02 2015
%Y Cf. A135660, A135661, A135662, A135663, A135664, A135665, A028391, A135668, A135669, A135670.
%K nonn,easy
%O 1,4
%A _Mohammad K. Azarian_, Nov 25 2007
%E Offset corrected by _Mohammad K. Azarian_, Nov 19 2008
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