A106211 Row sums of triangle A106210.
1, 2, 7, 38, 301, 3224, 44021, 735216, 14580195, 335762290, 8824804889, 261084641178, 8597298494025, 312159531050382, 12399137504630097, 535147013379083822, 24950976908580696095, 1250331101054276584968
Offset: 0
Keywords
Crossrefs
Cf. A106210.
Programs
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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)))}