3,3

Also number of self-dual polyhedra with n+1 vertices (and n+1 faces). - Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Dec 18 2006

M. B. Dillencourt, Polyhedra of small orders and their Hamiltonian properties. Tech. Rep. 92-91, Info. and Comp. Sci. Dept., Univ. Calif. Irvine, 1992.

P. J. Federico, Enumeration of polyhedra: the number of 9-hedra, J. Combin. Theory, 7 (1969), 155-161.

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).

Sequence in context: A151445 A000136 A013989 this_sequence A136509 A100664 A003446

Adjacent sequences: A002838 A002839 A002840 this_sequence A002842 A002843 A002844

nonn,nice

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

Definition corrected by Gordon Royle (gordon(AT)maths.uwa.edu.au), Dec 15 2005