Number of ternary rooted trees with n nodes and height exactly 9.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =1a(10) =8a(11) =43a(12) =180a(13) =657a(14) =2175a(15) =6746a(16) =19923a(17) =56766a(18) =157273a(19) =426372a(20) =1135812a(21) =2983032a(22) =7742322a(23) =19896231a(24) =50695676a(25) =128224079a(26) =322221166a(27) =805088502a(28) =2001225122a(29) =4951394924