10188872domain: NAppears in sequencesa(n) = n^n - n*(n-1)^(n-1).at n=8A060226Triangle read by rows: T(n,k) (1 <= k <= n) defined by T(n,n) = (n-1)^(n-1), T(n,k) = T(n,k+1) - (n-1)*T(n-1,k) for k = n-1 .. 1.at n=43A241580