6,3

a(6) = 1 because the complete bipartite graph K_{3,3} is the only 3-connected bipartite graph on 6 vertices.

Cf. A005142.

Sequence in context: A061520 A054883 A005402 this_sequence A002898 A003613 A099767

Adjacent sequences: A128950 A128951 A128952 this_sequence A128954 A128955 A128956

nonn

Gordon Royle (gordon(AT)maths.uwa.edu.au), May 10 2007