Number of rooted trees with n nodes with every leaf at height 7.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =9a(6) =17a(7) =28a(8) =48a(9) =81a(10) =140a(11) =236a(12) =405a(13) =686a(14) =1169a(15) =1984a(16) =3375a(17) =5723a(18) =9721a(19) =16478a(20) =27949a(21) =47354a(22) =80245a(23) =135869a(24) =230054a(25) =389304a(26) =658706a(27) =1114072a(28) =1883900a(29) =3184602