This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A121536 #9 May 17 2025 05:38:42
%S A121536 0,1,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7,7,8,8,8,8,9,9,9,9,9,10,10,10,10,
%T A121536 11,11,11,11,11,12,12,12,12,12,13,13,13,13,13,14,14,14,14,14,14,15,15,
%U A121536 15,15,15,15,16,16,16,16,16,16,17,17,17,17,17,17,18,18,18,18,18,18,19,19
%N A121536 Smallest m such that m^3 >= n^2.
%F A121536 a(n) = ceiling(n^(2/3)).
%F A121536 a(n) = (A070923(n)+n^2)^(1/3).
%F A121536 If n is a cube a(n) = A100196(n), otherwise a(n) = A100196(n)+1.
%F A121536 a(n) = A077107(n)^(1/3). - _Amiram Eldar_, May 17 2025
%t A121536 Table[Ceiling[n^(2/3)],{n,1,100}]
%Y A121536 Cf. A070923, A077107, A100196.
%K A121536 nonn,easy
%O A121536 1,3
%A A121536 _Zak Seidov_, Aug 05 2006
%E A121536 Offset changed to 0 and a(0) prepended by _Amiram Eldar_, May 17 2025