Number of embeddings on the sphere of planar graphs with n edges having connectivity exactly 2 and minimum vertex degree at least 3.

A187928

Number of embeddings on the sphere of planar graphs with n edges having connectivity exactly 2 and minimum vertex degree at least 3.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =15a(4) =42a(5) =135a(6) =440a(7) =1480a(8) =5106a(9) =17890a(10) =63264a(11) =226018a(12) =812354a(13) =2936837a(14) =10666188a(15) =38901190a(16) =142386358

External references