Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A112946
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A112946 Number of unrooted regular odd-valent planar maps with 6 vertices; maps are considered up to orientation-preserving homeomorphisms and the vertices are of valency 2n+1. +0
4
0, 26, 111096, 513654400, 2243178389200, 9550256850912960, 40141310067406592352, 167483578096089845880576, 695587719666862982630642400, 2880023438585172541459822939200 (list; graph; listen)
OFFSET

0,2

COMMENT

There is a closed formula.

LINKS

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

CROSSREFS

Cf. A112945, A112947.

Sequence in context: A034244 A015060 A015035 this_sequence A034246 A145336 A005084

Adjacent sequences: A112943 A112944 A112945 this_sequence A112947 A112948 A112949

KEYWORD

nonn

AUTHOR

Valery A. Liskovets (liskov(AT)im.bas-net.by), Oct 10 2005

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


AT&T Labs Research