41909domain: NAppears in sequencesT(n,k) = 1/k! * Sum_{i=0..k} (-1)^(k-i) *C(k,i) * A258222(n,i); triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=18A258223Total sum of composite parts in all partitions of n.at n=28A326982