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A014266 Number of trees on n nodes with forbidden limbs. 0
0, 1, 1, 1, 2, 2, 4, 7, 16, 30, 68, 146, 340, 786, 1878, 4507, 11045, 27220, 67956, 170766, 432818, 1103539, 2831814, 7303966, 18934866, 49302321, 128910528, 338329555, 891099316, 2354613762, 6240696052, 16587146598, 44203851675, 118093003229 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,5
COMMENTS
Differs from A014265 only at a(8). - R. J. Mathar, Feb 27 2016
LINKS
T. Lu, The enumeration of trees with and without given limbs, Discr. Math., 154 (1996), 153-165.
FORMULA
G.f.: x^8 + b(x) where b(x) is the o.g.f. of A014265. - Sean A. Irvine, Oct 18 2018
CROSSREFS
Cf. A014265.
Sequence in context: A014265 A153967 A052949 * A032441 A238184 A340333
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Sean A. Irvine, Oct 17 2018
STATUS
approved

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)