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Search: id:A003244
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| A003244 |
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Number of achiral trees with n nodes.
(Formerly M0759)
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+0
1
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| 1, 1, 1, 2, 3, 6, 9, 16, 23, 35, 51, 72
(list; graph; listen)
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OFFSET
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1,4
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REFERENCES
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F. Harary and R. W. Robinson, The number of achiral trees, J. Reine Angew. Math., 278 (1975), 322-335.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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Index entries for sequences related to trees
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CROSSREFS
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Sequence in context: A006868 A067435 A035494 this_sequence A115995 A051057 A147364
Adjacent sequences: A003241 A003242 A003243 this_sequence A003245 A003246 A003247
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KEYWORD
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nonn,easy,more
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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