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 A192576 #6 Mar 30 2012 18:55:30
%S A192576 1,2,4,9,22,58,163,478,1439,4415,13780,43757,141400,465016,1555961,
%T A192576 5294885,18315089,64357854,229601019,831132731,3051030786,11351968321,
%U A192576 42788503744,163309466037,630861836558,2465577001903,9745376900983
%N A192576 a(n) = sum(binomial(n,k)*floor(sqrt(Bell(k))),k=0..n).
%t A192576 Table[Sum[Binomial[n,k]Floor[Sqrt[BellB[k]]],{k,0,n}],{n,0,100}]
%o A192576 (Maxima) makelist(sum(binomial(n,k)*floor(sqrt(belln(k))),k,0,n),n,0,28);
%Y A192576 Cf. A192570, A192571, A192572, A192573, A192574.
%Y A192576 The Bell numbers are A000110.
%K A192576 nonn
%O A192576 0,2
%A A192576 _Emanuele Munarini_, Jul 04 2011