198660domain: NAppears in sequencesNumber of atoms in first n shells of type I hyperfullerene.at n=21A063497Numbers with prime factorization pqrstu^2.at n=28A189985(Denominators of Cauchy numbers of the first kind c_{2n})/6.at n=20A222560E.g.f. satisfies A(x) = 1 - x*log(1 - x*A(x)^3).at n=7A377687