Number of unlabeled rooted trees with n nodes in which the branches of any node with more than one distinct branch have empty intersection.

A316501

Number of unlabeled rooted trees with n nodes in which the branches of any node with more than one distinct branch have empty intersection.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =19a(6) =45a(7) =103a(8) =250a(9) =611a(10) =1528a(11) =3853a(12) =9875a(13) =25481a(14) =66382a(15) =174085a(16) =459541a(17) =1219462

External references