6,1

D. A. Holton and B. D. McKay, The smallest non-hamiltonian 3-connected cubic planar graphs have 38 vertices, J. Combinat. Theory, B 45 (1988), 305-319.

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

Sequence in context: A121050 A089402 A127940 this_sequence A006076 A086628 A032096

Adjacent sequences: A006793 A006794 A006795 this_sequence A006797 A006798 A006799

nonn

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