|
| |
|
|
A007080
|
|
Number of labeled Eulerian digraphs with n nodes.
(Formerly M1989)
|
|
4
|
|
|
|
1, 2, 10, 152, 7736, 1375952, 877901648, 2046320373120, 17658221702361472, 569773219836965265152, 69280070663388783890248448
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,2
|
|
|
REFERENCES
|
B. D. McKay, Applications of a technique for labeled enumeration, Congress. Numerantium, 40 (1983), 207-221.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
|
LINKS
|
Table of n, a(n) for n=1..11.
|
|
|
CROSSREFS
|
Sequence in context: A086619 A194026 A165940 * A134088 A076659 A197313
Adjacent sequences: A007077 A007078 A007079 * A007081 A007082 A007083
|
|
|
KEYWORD
|
nonn,nice
|
|
|
AUTHOR
|
N. J. A. Sloane, Mira Bernstein (mira(AT)math.berkeley.edu)
|
|
|
STATUS
|
approved
|
| |
|
|
