1,2
Cf. A050647, A048563, A050640.
Sequence in context: A013795 A013860 A052072 * A044882 A158743 A188308
Adjacent sequences: A050643 A050644 A050645 * A050647 A050648 A050649
nonn,base,more
Patrick De Geest (pdg(AT)worldofnumbers.com), Jul 15 1999.