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A014277 Number of trees on n nodes with forbidden limbs. +0
1
0, 1, 2, 6, 25, 114, 591, 3297, 19528, 120670, 7712276, 5061164, 33940023 (list; graph; listen)
OFFSET

0,3

REFERENCES

Taojun 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: A064811 A074418 A003454 this_sequence A006965 A058801 A074010

Adjacent sequences: A014274 A014275 A014276 this_sequence A014278 A014279 A014280

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

EXTENSIONS

Ralf Stephan points out that a(10) appears to be wrong, Feb 02, 2004.

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Last modified December 20 13:54 EST 2009. Contains 171081 sequences.


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