A102104 Row sums of triangular matrix A102101, which shifts upward to exclude the main diagonal under matrix fourth power.

1, 3, 34, 2125, 399551, 167436757, 133589812359, 182634217743739, 396471609861950572, 1290175805332297239092, 6016194958934722148801658, 38771533093655782191893463830, 335219158226849230801472869515158

Offset: 0

Author

Paul D. Hanna, Dec 29 2004

Keywords

• nonn

Crossrefs

Cf. A102101.

Programs

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^4)[i-1,1], B[i,j]=(A^4)[i-1,j]));));A=B); return(sum(k=0,n,A[n+1,k+1]))}