1,5
It is possible that the definition should say "connected" rather than "biconnected". Should be rechecked! - Max Alekseyev and Brendan McKay, Jun 17 2008
Keith M. Briggs, Combinatorial Graph Theory
Sequence in context: A050987 A137191 A106269 this_sequence A149258 A149259 A050911
Adjacent sequences: A126755 A126756 A126757 this_sequence A126759 A126760 A126761
nonn
N. J. A. Sloane (njas(AT)research.att.com), Feb 18 2007
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