Number of ternary rooted trees with n nodes and height exactly 7.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =1a(8) =6a(9) =26a(10) =88a(11) =267a(12) =743a(13) =1968a(14) =5006a(15) =12394a(16) =29984a(17) =71289a(18) =166927a(19) =386042a(20) =882887a(21) =1999964a(22) =4491226a(23) =10008151a(24) =22144282a(25) =48681992a(26) =106384313a(27) =231200051a(28) =499868227a(29) =1075542674