0,4

G. Labelle, C. Lamathe and P. Leroux, Labeled and unlabeled enumeration of k-gonal 2-trees

Cf. A054581.

Sequence in context: A159313 A054910 A028562 this_sequence A117993 A055056 A009521

Adjacent sequences: A094653 A094654 A094655 this_sequence A094657 A094658 A094659

nonn

Vladeta Jovovic (vladeta(AT)eunet.rs), Jun 06 2004