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A006570 From trees with valency <= 3.
(Formerly M1475)
+0
1
1, 2, 5, 15, 48, 166, 596, 2221, 8472 (list; graph; listen)
OFFSET

1,2

REFERENCES

P. J. Cameron, Some treelike objects, Quart. J. Math. Oxford, 38 (1987), 155-183.

LINKS

Index entries for sequences related to trees

CROSSREFS

Sequence in context: A013560 A071739 A035350 this_sequence A003430 A063021 A001892

Adjacent sequences: A006567 A006568 A006569 this_sequence A006571 A006572 A006573

KEYWORD

nonn

AUTHOR

njas

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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