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A014281 Number of trees on n nodes with forbidden limbs. +0
1
0, 1, 1, 1, 1, 2, 3, 4, 9, 18, 40, 84, 189, 425 (list; graph; listen)
OFFSET

0,6

REFERENCES

T. Lu, The enumeration of trees with and without given limbs, Discr. Math., 154 (1996), 153-165.

LINKS

Index entries for sequences related to trees

CROSSREFS

Sequence in context: A119721 A098969 A088275 this_sequence A086865 A122534 A101135

Adjacent sequences: A014278 A014279 A014280 this_sequence A014282 A014283 A014284

KEYWORD

nonn,more

AUTHOR

njas

page 1

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


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