The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A079456 Number of unlabeled and connected graphs which are complements of chordal graphs. 1
1, 1, 2, 6, 17, 67, 299, 1726, 12405, 112234, 1265629, 17716712, 306896676, 6579771024 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Usually referred to as "cochordal" graphs. G is cochordal if it contains no induced complement of a cycle of size 4 or more.
LINKS
F. Hüffner, tinygraph, software for generating integer sequences based on graph properties, version e8699da.
CROSSREFS
Sequence in context: A150039 A150040 A346043 * A264761 A253882 A327698
KEYWORD
more,nonn
AUTHOR
Jim Nastos, Jan 13 2003
EXTENSIONS
a(10)-a(14) added using tinygraph by Falk Hüffner, Jan 16 2016
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 04:34 EDT 2024. Contains 372618 sequences. (Running on oeis4.)