Number of rooted planar binary unlabeled trees with n leaves and caterpillar index >= 5.

A214204

Number of rooted planar binary unlabeled trees with n leaves and caterpillar index >= 5.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =8a(6) =16a(7) =48a(8) =160a(9) =560a(10) =1952a(11) =7008a(12) =25536a(13) =94000a(14) =348640a(15) =1301664a(16) =4884928a(17) =18410208a(18) =69632320a(19) =264176320a(20) =1004907904a(21) =3831461936a(22) =14638340960a(23) =56028848160a(24) =214804352960a(25) =824741125536

External references