A007856 - OEIS

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A007856

Subtrees in rooted plane trees on n nodes.

1, 3, 12, 52, 236, 1109, 5366, 26639, 135300, 701269, 3700400, 19834973, 107784622, 592705377, 3292970302 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	REFERENCES	`M. Klazar, Twelve countings with rooted plane trees, European Journal of Combinatorics 18 (1997), 195-210; Addendum, 18 (1997), 739-740.`
	LINKS	`Table of n, a(n) for n=1..15.` `Index entries for sequences related to rooted trees`
	CROSSREFS	`Sequence in context: A151192 A151193 A151194 * A151195 A151196 A010736` `Adjacent sequences: A007853 A007854 A007855 * A007857 A007858 A007859`
	KEYWORD	`nonn`
	AUTHOR	`Martin Klazar (klazar(AT)kam.mff.cuni.cz)`
	STATUS	`approved`

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Last modified May 22 02:35 EDT 2013. Contains 225510 sequences.