Maximal number of root ancestral configurations among matching gene trees and species trees with n leaves.

A355108

Maximal number of root ancestral configurations among matching gene trees and species trees with n leaves.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =4a(4) =6a(5) =10a(6) =15a(7) =25a(8) =35a(9) =55a(10) =80a(11) =130a(12) =182a(13) =286a(14) =416a(15) =676a(16) =936a(17) =1456a(18) =2106a(19) =3406a(20) =4758a(21) =7462a(22) =10842a(23) =17602a(24) =24372a(25) =37912a(26) =54837a(27) =88687a(28) =123891a(29) =194299

External references