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Search: id:A052393
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A052393 Number of unlabeled ternary cacti having n triangles. +0
1
1, 1, 3, 6, 19, 57, 258, 1110, 5475, 27429, 143379, 764970, 4173906 (list; graph; listen)
OFFSET

0,3

LINKS

Index entries for sequences related to cacti

Miklos Bona, Michel Bousquet, Gilbert Labelle, Pierre Leroux, Enumeration of m-ary cacti, Advances in Applied Mathematics, 24 (2000), 22-56 (pdf, dvi).

CROSSREFS

Sequence in context: A148570 A148571 A148572 this_sequence A024607 A058818 A081181

Adjacent sequences: A052390 A052391 A052392 this_sequence A052394 A052395 A052396

KEYWORD

nonn

AUTHOR

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

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Last modified December 4 12:27 EST 2008. Contains 151280 sequences.


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