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Search: id:A052395
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A052395 Number of unlabeled asymmetric 4-ary cacti having n polygons. +0
1
1, 1, 0, 6, 28, 193, 1140, 7688, 52364, 373560, 2732836, 20506254, 156899748 (list; graph; listen)
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: A163029 A045722 A047129 this_sequence A034660 A090898 A134872

Adjacent sequences: A052392 A052393 A052394 this_sequence A052396 A052397 A052398

KEYWORD

nonn

AUTHOR

Simon Plouffe (simon.plouffe(AT)gmail.com)

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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