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A055304 Number of labeled rooted trees with n nodes and 3 leaves. 0
4, 140, 3000, 54600, 940800, 16087680, 279417600, 4989600000, 92207808000, 1769511744000, 35321737651200, 733823266176000, 15866448998400000, 356873052856320000, 8344427063132160000, 202660737281114112000 (list; graph; refs; listen; history; internal format)
OFFSET

4,1

LINKS

Index entries for sequences related to rooted trees

FORMULA

(n!/3!)*Stirling2(n-1, n-3). - Vladeta Jovovic (vladeta(AT)eunet.rs), Jan 28 2004

CROSSREFS

Column 3 of A055302.

Sequence in context: A089666 A029850 A093981 * A002917 A119038 A048432

Adjacent sequences:  A055301 A055302 A055303 * A055305 A055306 A055307

KEYWORD

nonn

AUTHOR

Christian G. Bower (bowerc(AT)usa.net), May 11 2000

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Last modified February 15 21:27 EST 2012. Contains 205859 sequences.