Number of series-reduced planted trees with n leaves of 2 colors.

A050381

Number of series-reduced planted trees with n leaves of 2 colors.

Terms

    a(0) =2a(1) =3a(2) =10a(3) =40a(4) =170a(5) =785a(6) =3770a(7) =18805a(8) =96180a(9) =502381a(10) =2667034a(11) =14351775a(12) =78096654a(13) =429025553a(14) =2376075922a(15) =13252492311a(16) =74372374366a(17) =419651663108

External references