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Search: id:A003244
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A003244 Number of achiral trees with n nodes.
(Formerly M0759)
+0
1
1, 1, 1, 2, 3, 6, 9, 16, 23, 35, 51, 72 (list; graph; listen)
OFFSET

1,4

REFERENCES

F. Harary and R. W. Robinson, The number of achiral trees, J. Reine Angew. Math., 278 (1975), 322-335.

LINKS

Index entries for sequences related to trees

CROSSREFS

Adjacent sequences: A003241 A003242 A003243 this_sequence A003245 A003246 A003247

Sequence in context: A006868 A067435 A035494 this_sequence A115995 A051057 A007865

KEYWORD

nonn,easy,more

AUTHOR

njas

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Last modified May 16 01:24 EDT 2008. Contains 139630 sequences.


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