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%I #4 Mar 30 2012 18:36:44
%S 1,2,3,7,33,285,3648,61306,1270440,31244205,888288960,28640745684,
%T 1032065614715,41087944243649,1790413981105727,84737880414848784,
%U 4327877295100145382,237218770042549151701,13887772416031152573506
%N Row sums of triangular matrix A101479, in which row n equals row (n-1) of A101479^(n-1) followed by '1'.
%o (PARI) {a(n)=local(A=Mat(1),B);for(m=1,n+1,B=matrix(m,m);for(i=1,m, for(j=1,i, if(j==i,B[i,j]=1,B[i,j]=(A^(i-2))[i-1,j]);));A=B); return(sum(k=1,n+1,A[n+1,k]))}
%K nonn
%O 0,2
%A _Paul D. Hanna_, Jan 21 2005
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