login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A128953 Number of 3-connected bipartite graphs on n unlabeled nodes. 0
1, 1, 6, 12, 85, 471, 5373, 75145, 1543382, 41554738 (list; graph; refs; listen; history; text; internal format)
OFFSET

6,3

LINKS

Table of n, a(n) for n=6..15.

EXAMPLE

a(6) = 1 because the complete bipartite graph K_{3,3} is the only 3-connected bipartite graph on 6 vertices.

CROSSREFS

Cf. A005142.

Sequence in context: A345271 A054883 A005402 * A181597 A002898 A003613

Adjacent sequences:  A128950 A128951 A128952 * A128954 A128955 A128956

KEYWORD

nonn,more

AUTHOR

Gordon F. Royle, May 10 2007

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 18 22:37 EDT 2022. Contains 353826 sequences. (Running on oeis4.)