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A119856 Number of equicolorable (unrooted) trees on 2n nodes. 0
1, 1, 3, 9, 37, 168, 895 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

COMMENTS

For precise definition, recurrence and asymptotics see the Pippenger reference.

REFERENCES

N. Pippenger, Enumeration of equicolorable trees, SIAM J. Discrete Math., 14 (2001), 93-115.

CROSSREFS

Sequence in context: A149022 A134818 A002751 * A077365 A006229 A008986

Adjacent sequences:  A119853 A119854 A119855 * A119857 A119858 A119859

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Aug 04 2006

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Last modified February 15 04:56 EST 2012. Contains 205694 sequences.