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A000198
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Largest order of automorphism group of a tournament with n nodes.
(Formerly M2280 N0902)
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0
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3, 3, 5, 9, 21, 21, 81, 81, 81, 243, 243, 441, 1215, 1701, 1701, 6561, 6561, 6561, 45927, 45927, 45927, 137781, 137781, 229635, 1594323
(list; graph; refs; listen; history; internal format)
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OFFSET
| 3,1
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COMMENTS
| It appears that all terms except a(5) = 5 are divisible by a power of 3. [Jonathan Vos Post, Apr 20, 2011]
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REFERENCES
| J. W. Moon, Topics on Tournaments. Holt, NY, 1968, p. 81.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
| Index entries for sequences related to tournaments
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CROSSREFS
| Sequence in context: A104220 A137202 A146926 * A202674 A027170 A132775
Adjacent sequences: A000195 A000196 A000197 * A000199 A000200 A000201
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KEYWORD
| nonn,nice,more
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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