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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A123465 Number of tree perfect graphs on n nodes. 0
1, 1, 1, 2, 3, 6, 11, 23, 47, 106 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

REFERENCES

S. Hougardy, Classes of perfect graphs, Discr. Math. 306 (2006), 2529-2571.

LINKS

S. Hougardy, Home Page

CROSSREFS

Sequence in context: A198648 A198655 A130131 * A000055 A006787 A176425

Adjacent sequences:  A123462 A123463 A123464 * A123466 A123467 A123468

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Oct 18 2006

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

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

Last modified February 16 20:28 EST 2012. Contains 205962 sequences.