55705domain: NAppears in sequencesG.f.: Product_{j>=1} Product_{i>=1} (1 + x^(i*j)).at n=31A107742Maximally refined partitions into distinct parts (of any natural number) with n parts.at n=19A179817a(n) = n! * Sum_{k=0..n} (-1)^(n-k) * binomial(k+3,4) / k!.at n=10A368586