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A014266 Number of trees on n nodes with forbidden limbs. 0

%I #23 Oct 18 2018 12:23:37

%S 0,1,1,1,2,2,4,7,16,30,68,146,340,786,1878,4507,11045,27220,67956,

%T 170766,432818,1103539,2831814,7303966,18934866,49302321,128910528,

%U 338329555,891099316,2354613762,6240696052,16587146598,44203851675,118093003229

%N Number of trees on n nodes with forbidden limbs.

%C Differs from A014265 only at a(8). - _R. J. Mathar_, Feb 27 2016

%H T. Lu, <a href="http://dx.doi.org/10.1016/0012-365X(95)00041-T">The enumeration of trees with and without given limbs</a>, Discr. Math., 154 (1996), 153-165.

%H <a href="/index/Tra#trees">Index entries for sequences related to trees</a>

%F G.f.: x^8 + b(x) where b(x) is the o.g.f. of A014265. - _Sean A. Irvine_, Oct 18 2018

%Y Cf. A014265.

%K nonn

%O 0,5

%A _N. J. A. Sloane_.

%E More terms from _Sean A. Irvine_, Oct 17 2018

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Last modified March 29 08:53 EDT 2024. Contains 371268 sequences. (Running on oeis4.)