Number of rooted ordered trees with n non-root nodes such that the branch lengths are weakly increasing.

A246565

Number of rooted ordered trees with n non-root nodes such that the branch lengths are weakly increasing.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =9a(6) =20a(7) =31a(8) =67a(9) =115a(10) =238a(11) =406a(12) =880a(13) =1494a(14) =3118a(15) =5568a(16) =11408a(17) =20092a(18) =41938a(19) =73687a(20) =151529a(21) =272359a(22) =552611a(23) =987277a(24) =2033173a(25) =3617167a(26) =7371745a(27) =13318869a(28) =26991289a(29) =48496985

External references