A052395 - OEIS

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A052395

Number of unlabeled asymmetric 4-ary cacti having n polygons.

1, 1, 0, 6, 28, 193, 1140, 7688, 52364, 373560, 2732836, 20506254, 156899748 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	LINKS	`Miklos Bona, Michel Bousquet, Gilbert Labelle and Pierre Leroux, Enumeration of m-ary cacti, Advances in Applied Mathematics, 24 (2000), 22-56 (pdf, dvi).` `Index entries for sequences related to cacti`
	CROSSREFS	`Sequence in context: A047129 A173081 A169723 * A034660 A090898 A134872` `Adjacent sequences: A052392 A052393 A052394 * A052396 A052397 A052398`
	KEYWORD	`nonn`
	AUTHOR	`Simon Plouffe (simon.plouffe(AT)gmail.com)`

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Last modified February 14 02:39 EST 2012. Contains 205567 sequences.