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

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =8a(6) =17a(7) =39a(8) =88a(9) =203a(10) =464a(11) =1056a(12) =2381a(13) =5344a(14) =11900a(15) =26381a(16) =58165a(17) =127713a(18) =279209a(19) =608213a(20) =1319985a(21) =2855275a(22) =6155981a(23) =13231553a(24) =28353787a(25) =60583959a(26) =129084369a(27) =274283708a(28) =581244959a(29) =1228514486