A106211 - OEIS

%I #4 Mar 30 2012 18:36:45

%S 1,2,7,38,301,3224,44021,735216,14580195,335762290,8824804889,

%T 261084641178,8597298494025,312159531050382,12399137504630097,

%U 535147013379083822,24950976908580696095,1250331101054276584968

%N Row sums of triangle A106210.

%o (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 Cf. A106210.

%K nonn

%O 0,2

%A _Paul D. Hanna_, May 01 2005