|
|
REFERENCES
|
F. Harary and E. M. Palmer, Enumeration of finite automata, Inform. Control, 10 (1967), 499-508.
F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 149.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
