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A054366 Number of Number of unlabeled 6-ary cacti having n polygons. +0
1
1, 1, 6, 21, 146, 1101, 10632, 107062, 1151802, 12845442, 147845706 (list; graph; listen)
OFFSET

0,3

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: A081077 A093775 A058821 this_sequence A007594 A012858 A084539

Adjacent sequences: A054363 A054364 A054365 this_sequence A054367 A054368 A054369

KEYWORD

nonn

AUTHOR

Simon Plouffe (plouffe(AT)math.uqam.ca)

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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