719340domain: NAppears in sequencesTriangle T, read by rows, such that the matrix square shifts T left one column and up one row, with T(0,0)=T(1,0)=1 and T(n,0)=0 for n>1 and T(n,n)=1 for n>=0.at n=47A098542Column 2 of triangle A098542, which shifts left and up under the matrix square.at n=7A098543