580800domain: NAppears in sequencesMolecular topological indices of the lattice graphs.at n=10A192832Composite numbers m such that Product_{i=1..k} (p_i/(p_i-1)) / Sum_{i=1..k} (p_i/(p_i+1)) is an integer, where p_i are the k prime factors of m (with multiplicity).at n=26A230112