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 A192571 #10 May 03 2024 22:51:43
%S A192571 1,2,3,5,8,15,29,58,122,267,607,1430,3482,8739,22555,59743,162115,
%T A192571 449977,1275856,3690963,10882913,32674420,99806496,309930282,
%U A192571 977731801,3131470488,10176415237,33537002728,112026106459
%N A192571 a(n) = sum(floor(sqrt(Bell(k))),k=0..n).
%t A192571 Table[Sum[Floor[Sqrt[BellB[k]]],{k,0,n}],{n,0,100}]
%t A192571 Accumulate[Floor[Sqrt[BellB[Range[0,30]]]]] (* _Harvey P. Dale_, May 03 2024 *)
%o A192571 (Maxima) makelist(sum(floor(sqrt(belln(k))),k,0,n),n,0,28);
%Y A192571 Cf. A000110, A192570.
%K A192571 nonn
%O A192571 0,2
%A A192571 _Emanuele Munarini_, Jul 04 2011