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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A079564 Number of unlabeled graphs on n vertices with no induced subgraphs isomorphic to a P5 or complement of a P5 (P5 = path on 5 vertices.). 0
1, 1, 2, 6, 19, 78, 345, 1780, 10030, 62602, 429607, 3285435, 28623679, 296580989, 3897603006 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

REFERENCES

J. L. Fouquet, "A Decomposition for a class of (P5,P5-bar)-free graphs," Discrete Math. 121 (1993) 75-83

V. Giakoumakis and I. Rusu, "Weighted Parameters in (P5,P5-bar)-free graphs," Discrete Appl. Math. 80 (2-3) (1997) 255-261

LINKS

Table of n, a(n) for n=1..15.

F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version 39d0919

CROSSREFS

Sequence in context: A138800 A008989 A057240 * A266933 A079453 A186770

Adjacent sequences:  A079561 A079562 A079563 * A079565 A079566 A079567

KEYWORD

nonn

AUTHOR

Jim Nastos, Jan 24 2003

EXTENSIONS

Terms a(10)-a(15) added using tinygraph by Falk Hüffner, Jan 13 2016

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.

License Agreements, Terms of Use, Privacy Policy .

Last modified May 29 05:38 EDT 2016. Contains 273488 sequences.