1728722domain: NAppears in sequencesTriangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x^2 + ... + x^n to the polynomial A_k*(x-k)^k for 0 <= k <= n.at n=60A242598Number of symmetric 0-1 matrices with nondecreasing row sums.at n=7A351288