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Search: id:A003614
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| A003614 |
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Symmetries in unrooted (1,4) trees on 3n-1 vertices.
(Formerly M2134)
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+0
1
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| 2, 24, 72, 144, 1584, 32544, 30528, 188928, 4030848, 12029184, 66104064, 524719872, 2364433920, 28794737664, 194617138176, 962354727936, 6901447938048, 112061234884608, 366020989931520, 2592919032274944, 19913392024584192
(list; graph; listen)
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OFFSET
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1,1
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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).
Kathleen A. McKeon, The expected number of symmetries in locally-restricted trees I, pp. 849-860 of Y. Alavi et al., eds., Graph Theory, Combinatorics and Applications. Wiley, NY, 2 vols., 1991.
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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: A100918 A152965 A139284 this_sequence A119060 A119050 A119068
Adjacent sequences: A003611 A003612 A003613 this_sequence A003615 A003616 A003617
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KEYWORD
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nonn
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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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