A112947 - OEIS

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A112947

Number of unrooted regular odd-valent planar maps with 10 vertices; maps are considered up to orientation-preserving homeomorphisms and the vertices are of valency 2n+1.

1

0, 1904, 17313263640, 53786496621600480, 115106032016630589567220, 204887911426306253833736206368, 326950476035695538194385010882728640, 485422668906114651402145718767396615062912

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

COMMENTS

There is a closed formula.

LINKS

Table of n, a(n) for n=0..7.

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

CROSSREFS

Sequence in context: A190653 A124628 A253364 * A367229 A355891 A362444

Adjacent sequences: A112944 A112945 A112946 * A112948 A112949 A112950

KEYWORD

nonn

AUTHOR

Valery A. Liskovets, Oct 10 2005

STATUS

approved