Number of unrooted regular planar maps of valency 5 with 2n vertices (considered up to orientation-preserving homeomorphisms).

A112949

Number of unrooted regular planar maps of valency 5 with 2n vertices (considered up to orientation-preserving homeomorphisms).

Terms

    a(0) =7a(1) =468a(2) =111096a(3) =39670362a(4) =17313263640

External references