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 A192573 #6 May 20 2021 12:21:13
%S A192573 1,2,3,6,11,24,52,112,251,574,1347,3242,7996,20202,52245,138200,
%T A192573 373640,1031702,2907207,8353892,24460864,72931232,221265823,682632254,
%U A192573 2140211338,6814954528,22027143227,72228405060,240154754720
%N A192573 a(n) = Sum_{k=0..n} floor(sqrt(Bell(k)))*floor(sqrt(Bell(n-k))).
%t A192573 Table[Sum[Floor[Sqrt[BellB[k]]]Floor[Sqrt[BellB[n-k]]],{k,0,n}],{n,0,100}]
%o A192573 (Maxima) makelist(sum(floor(sqrt(belln(k)))*floor(sqrt(belln(n-k))),k,0,n),n,0,28);
%Y A192573 Cf. A192570, A192571, A192572.
%K A192573 nonn
%O A192573 0,2
%A A192573 _Emanuele Munarini_, Jul 04 2011