A102088 Row sums of triangular matrix A102086, which shifts upward to exclude the main diagonal under matrix square.
1, 3, 10, 49, 367, 3850, 52173, 868614, 17199370, 395757887, 10396896795, 307511681367, 10124396776169, 367567456615441, 14598938725992903, 630060602243145513, 29375322688053255480, 1472008290120323375502
Offset: 0
Keywords
Programs
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PARI
{a(n)=local(A=matrix(2,2),B);A[1,1]=1; for(m=2,n+1,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,A[n+1,k+1]))}