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!)
A006651 Number of graphs with n nodes, n+2 edges and no isolated vertices.
(Formerly M3584)
1
1, 4, 22, 110, 515, 2272, 9777, 40752, 166519, 668134, 2644988, 10351321, 40150556, 154591610, 591780559, 2254880616, 8561287942, 32418230925, 122522492807, 462502319244, 1744810912396, 6581954720648, 24839735669771 (list; graph; refs; listen; history; text; internal format)
OFFSET
4,2
REFERENCES
W. L. Kocay, Some new methods in reconstruction theory, pp. 89 - 114 of Combinatorial Mathematics IX. Proc. Ninth Australian Conference (Brisbane, August 1981). Ed. E. J. Billington, S. Oates-Williams and A. P. Street. Lecture Notes Math., 952. Springer-Verlag, 1982.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
CROSSREFS
Cf. A048180.
Sequence in context: A220457 A108840 A007994 * A159616 A244423 A144047
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Vladeta Jovovic, Mar 02 2008
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 March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)