login
This site is supported by donations to The OEIS Foundation.

 

Logo

The submissions stack has been unacceptably high for several months now. Please voluntarily restrict your submissions and please help with the editing. (We don't want to have to impose further limits.)

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A079568 Number of unlabeled, connected graphs on n nodes which have no induced subgraph isomorphic to a P5, P5-bar or C5 and are not bipartite nor cobipartite nor split and are primes. 0
0, 0, 0, 0, 0, 0, 6, 34, 206 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,7

COMMENTS

P5 = path on five nodes. P5-bar = complement of P5. C5 = cycle on five nodes. Cobipartite means having a bipartite complement. G prime if G has no module (homogeneous set.) G split iff G and the complement of G are chordal.

LINKS

Table of n, a(n) for n=1..9.

CROSSREFS

Sequence in context: A087413 A244829 A059228 * A231058 A218893 A063090

Adjacent sequences:  A079565 A079566 A079567 * A079569 A079570 A079571

KEYWORD

more,nonn

AUTHOR

Jim Nastos, Jan 24 2003

STATUS

approved

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

Content is available under The OEIS End-User License Agreement .

Last modified August 28 15:16 EDT 2015. Contains 261125 sequences.