8156160domain: NAppears in sequencesTriangle, T(n, k) = A008517(n+1, k+1)*A008517(n+1, n-k+1), read by rows.at n=22A156529Triangle, T(n, k) = A008517(n+1, k+1)*A008517(n+1, n-k+1), read by rows.at n=26A156529