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 A174058 #6 Oct 16 2018 14:33:36
%S A174058 0,1,2,4,6,8,11,13,16,19,22,26,29,33,37,40,44,49,53,57,62,66,71,76,81,
%T A174058 86,91,96,101,107,112,118,123,129,135,141,147,153,159,165,172,178,184,
%U A174058 191,198,204,211,218,225,232,239,246,253,261,268,275,283,290,298,306
%N A174058 Round(Sum_{k=1..n} {sqrt(k)}).
%H A174058 Harvey P. Dale, <a href="/A174058/b174058.txt">Table of n, a(n) for n = 1..1000</a>
%t A174058 s=0;lst={};Do[s+=Sqrt[n];AppendTo[lst,Round[s]],{n,0,6!}];lst
%t A174058 Accumulate[Sqrt[Range[0,60]]]//Round (* _Harvey P. Dale_, Oct 16 2018 *)
%Y A174058 Cf. A016040, A025224
%K A174058 nonn
%O A174058 1,3
%A A174058 _Vladimir Joseph Stephan Orlovsky_, Mar 06 2010