A112949 Number of unrooted regular planar maps of valency 5 with 2n vertices (considered up to orientation-preserving homeomorphisms).

7, 468, 111096, 39670362, 17313263640, 8581243954044, 4650485509103976, 2692853733312152946, 1641063780244320916056, 1041574815624514527248040

Offset: 1

Author

Valery A. Liskovets, Oct 10 2005

Keywords

• nonn

Comments

No closed formula is known.

Links

• Z. C. Gao, V. A. Liskovets and N. C. Wormald, Enumeration of unrooted odd-valent regular planar maps, Preprint, 2005.

Crossrefs

Cf. A112948, A112950.