Number of unlabeled (and unrooted) trees on 2n nodes with a bicentroid.

A102911

Number of unlabeled (and unrooted) trees on 2n nodes with a bicentroid.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =3a(4) =10a(5) =45a(6) =210a(7) =1176a(8) =6670a(9) =41041a(10) =258840a(11) =1697403a(12) =11359761a(13) =77956341a(14) =543625851a(15) =3855429766a(16) =27702225271a(17) =201515674128

External references