1,3

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

F. Harary and E. M. Palmer, Graphical Enumeration, Academic Press, NY, 1973, p. 231.

W. Oberschelp, Kombinatorische Anzahlbestimmungen in Relationen, Math. Ann., 174 (1967), 53-78.

E. M. Palmer, On the number of n-plexes, Discrete Math., 6 (1973), 377-390.

P. J. Cameron, Sequences realized by oligomorphic permutation groups, J. Integ. Seqs. Vol. 3 (2000), #00.1.5.

A diagonal of A092337.

Sequence in context: A027303 A052695 A002665 this_sequence A058882 A000659 A164919

Adjacent sequences: A000662 A000663 A000664 this_sequence A000666 A000667 A000668

nonn,nice

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

Corrected and extended by Vladeta Jovovic (vladeta(AT)eunet.rs)