A007152 - OEIS

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A007152

Evolutionary trees of magnitude n.
(Formerly M3628)

1, 1, 4, 28, 301, 4466, 84974, 1974904, 54233540, 1718280152 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,3`
	REFERENCES	`L. R. Foulds and R. W. Robinson, Counting certain classes of evolutionary trees with singleton labels, Congress. Num., 44 (1984), 65-88.` `N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).`
	LINKS	`Table of n, a(n) for n=1..10.` `Index entries for sequences related to trees`
	CROSSREFS	`Cf. A007151.` `Sequence in context: A091485 A201354 A112938 * A177554 A192485 A198513` `Adjacent sequences: A007149 A007150 A007151 * A007153 A007154 A007155`
	KEYWORD	`nonn,easy,more`
	AUTHOR	`R. W. Robinson, rwr(AT)pollux.cs.uga.edu`
	STATUS	`approved`

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Last modified June 20 06:36 EDT 2013. Contains 226422 sequences.