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A101484 Row sums of triangular matrix A101479, in which row n equals row (n-1) of A101479^(n-1) followed by '1'. 1

%I

%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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Last modified January 20 18:02 EST 2022. Contains 350472 sequences. (Running on oeis4.)