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Search: id:A007080
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| A007080 |
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Number of labeled Eulerian digraphs with n nodes.
(Formerly M1989)
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+0
4
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| 1, 2, 10, 152, 7736, 1375952, 877901648, 2046320373120, 17658221702361472, 569773219836965265152, 69280070663388783890248448
(list; graph; listen)
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OFFSET
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1,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
B. D. McKay, Applications of a technique for labeled enumeration, Congress. Numerantium, 40 (1983), 207-221.
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CROSSREFS
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Sequence in context: A060595 A086619 A165940 this_sequence A134088 A076659 A007131
Adjacent sequences: A007077 A007078 A007079 this_sequence A007081 A007082 A007083
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KEYWORD
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nonn,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein (mira(AT)math.berkeley.edu)
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