Number of rooted trees with n nodes with every leaf at height 6.

Terms

a(0) =1a(1) =1a(2) =2a(3) =3a(4) =6a(5) =9a(6) =17a(7) =27a(8) =47a(9) =78a(10) =135a(11) =224a(12) =384a(13) =642a(14) =1088a(15) =1827a(16) =3088a(17) =5182a(18) =8736a(19) =14661a(20) =24660a(21) =41378a(22) =69500a(23) =116534a(24) =195509a(25) =327627a(26) =549104a(27) =919593a(28) =1539985a(29) =2577399