639156domain: NAppears in sequencesLower triangular matrix T, read by rows, that shifts left one column under the matrix square of T, with T(n,0)=T(n,1) for n>0 and T(n,n)=1 for n>=0.at n=38A098539Column 2 of triangle A098539, which shifts left one column under the matrix square.at n=6A098541