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 A106211 #4 Mar 30 2012 18:36:45
%S A106211 1,2,7,38,301,3224,44021,735216,14580195,335762290,8824804889,
%T A106211 261084641178,8597298494025,312159531050382,12399137504630097,
%U A106211 535147013379083822,24950976908580696095,1250331101054276584968
%N A106211 Row sums of triangle A106210.
%o A106211 (PARI) {a(n)=local(A=matrix(1,1),B);A[1,1]=1; for(m=2,n+2,B=matrix(m,m);for(i=1,m, for(j=1,i, if(j==i,B[i,j]=j,if(j==1,B[i,j]=(A^2)[i-1,1], B[i,j]=(A^2)[i-1,j]));));A=B); return(sum(k=0,n,if(k==0,A[n+1,k+1],A[n+1,k]/k^2)))}
%Y A106211 Cf. A106210.
%K A106211 nonn
%O A106211 0,2
%A A106211 _Paul D. Hanna_, May 01 2005