Number of unrooted 3-regular planar maps with 2n vertices, up to orientation-preserving isomorphisms.
A112948
Number of unrooted 3-regular planar maps with 2n vertices, up to orientation-preserving isomorphisms.
Terms
- a(0) =2a(1) =6a(2) =26a(3) =191a(4) =1904a(5) =22078a(6) =282388a(7) =3848001a(8) =54953996a(9) =814302292
External references
- oeis: A112948