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 A329328 #24 Nov 25 2019 21:02:01
%S A329328 4,49,1024,11881,15876,29241,23530332816,90070213689,165698657721,
%T A329328 233002186209,8246098046404,363533405168704,24015392820628036,
%U A329328 48563553937960000,6648251155785800089,497199122464645742436,749745222626569665409,10925409774976373110009
%N A329328 The squares in A329472.
%C A329328 The first 18 terms are the sums of the first 1, 5, 27, 95, 110, 150, 135833, 265758, 360459, 427441, 2542860, 16883814, 137228168, 195143291, 2283242905, 19745293160, 24246846494, 92558706480 nonsquarefree numbers.
%C A329328 a(19) > 2*10^22. - _Giovanni Resta_, Nov 17 2019
%F A329328 Equals A000290 intersection A329472.
%e A329328 49 is a term because sum of first five nonsquarefree numbers is a square 4 + 8 + 9 + 12 + 16 = 49.
%t A329328 p=0; Do[If[!SquareFreeQ[n],p=p+n; If[IntegerQ[p^(1/2)], Print[p]]], {n,1,10^8}]
%o A329328 (PARI) lista(nn) = {my(s=0); for(k=1, nn, if(omega(k)!=bigomega(k), s+=k; if(issquare(s), print1(s, ", ")))); } \\ _Jinyuan Wang_, Nov 17 2019
%Y A329328 Cf. A000290, A262783, A329472.
%K A329328 nonn
%O A329328 1,1
%A A329328 _Metin Sariyar_, Nov 15 2019
%E A329328 a(13)-a(18) from _Giovanni Resta_, Nov 17 2019