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A003610 Symmetries in unrooted (1,3) trees on 2n vertices.
(Formerly M1565)
+0
1
2, 6, 8, 8, 56, 24, 168, 240, 608, 920, 5680, 6104, 18416, 43008, 148152, 325608, 980840, 2421096, 7336488, 19769312, 58192608, 164776248, 502085760, 1427051544 (list; graph; listen)
OFFSET

1,1

REFERENCES

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.

LINKS

Index entries for sequences related to trees

CROSSREFS

Adjacent sequences: A003607 A003608 A003609 this_sequence A003611 A003612 A003613

Sequence in context: A093888 A136702 A064165 this_sequence A077477 A095879 A120736

KEYWORD

nonn

AUTHOR

njas, Mira Bernstein (mira(AT)math.berkeley.edu)

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Last modified October 12 15:26 EDT 2008. Contains 144830 sequences.


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