|
|
A126201
|
|
Number of rooted connected unlabeled planar graphs on n nodes.
|
|
4
|
|
|
|
OFFSET
|
1,3
|
|
COMMENTS
|
Number of "pointed" connected planar graphs on n nodes: number of pairs (G,P) where G is a connected unlabeled planar graph with n nodes and P runs through the orbit representatives of nodes in G under the action of Aut(G).
For n <= 4 this agrees with A126100; a(5) = A126100(5) - 1 = 57, since K_5 is the only excluded graph on 5 nodes.
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,more
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|