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

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A099717 Consider the family of multigraphs enriched by the species of trees. Sequence gives number of those multigraphs with n loops and edges. 0
1, 2, 9, 70, 798, 12230, 238979, 5746740, 165778237, 5626476014, 221330040771, 9950747684006 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

REFERENCES

G. Paquin, D\'enombrement de multigraphes enrichis, M\'emoire, Math. Dept., Univ. Qu\'ebec \`a Montr\'eal, 2004.

CROSSREFS

Sequence in context: A108522 A014500 A101482 * A177450 A193469 A121879

Adjacent sequences:  A099714 A099715 A099716 * A099718 A099719 A099720

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Oct 26 2004

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 14:07 EST 2012. Contains 205930 sequences.