328804domain: NAppears in sequencesSum of entries in all the arrangements of the set {1,2,...,n} (to n=0 there corresponds the empty set).at n=7A134432Triangle read by rows, T(n,k) = Sum_{j=0..n} C(n,j)*L(j,k), L the unsigned Lah numbers A271703, for n>=0 and 0<=k<=n.at n=38A271705