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 A174805 #2 Mar 31 2012 12:38:35
%S A174805 0,3,5,6,8,10,11,12,13,15,17,18,19,20,21,22,24,26,27,28,29,30,31,32,
%T A174805 33,35,37,38,39,40,41,42,43,44,45,46,48,50,51,52,53,54,55,56,57,58,59,
%U A174805 60,61,63,65,66,67,68,69,70,71,72,73,74,75,76,77,78,80,82,83,84,85,86,87
%N A174805 n+ceiling[sqrt(n)]+floor[sqrt(n)].
%t A174805 f[n_]:=n+Floor[Sqrt[n]]+Ceiling[Sqrt[n]];Table[f[n],{n,0,5!}]
%Y A174805 Cf. A038760, A174803, A174804
%K A174805 nonn
%O A174805 0,2
%A A174805 _Vladimir Joseph Stephan Orlovsky_, Mar 29 2010