1,2

V. A. Liskovets [ Liskovec ], Enumeration of nonisomorphic strongly connected automata. (Russian); Vesti Akad. Nauk. Belarus. SSR, Ser. Phys.-Mat., No. 3, 1971, pp. 26-30, esp. p. 30 (Math. Rev. 46 #5081).

V. A. Liskovets [ Liskovec ], A general enumeration scheme for labeled graphs. (Russian); Dokl. Akad. Nauk. Belarus. SSR, Vol. 21, No. 6 (1977), pp. 496-499 (Math. Rev. 58 #21797).

Zentralblatt 224 #94053.

Sequence in context: A144345 A097820 A164894 this_sequence A055973 A066357 A109092

Adjacent sequences: A027832 A027833 A027834 this_sequence A027836 A027837 A027838

nonn

N. J. A. Sloane (njas(AT)research.att.com).