1186866domain: NAppears in sequencesa(n) = 1944*n^2 - 5016*n + 3138 (n >= 1).at n=25A304838Regular triangle read by rows: T(n,k) is the number of multiset partitions of normal multisets of size n into k blocks, where a multiset is normal if it spans an initial interval of positive integers.at n=50A317532