Number of n-node rooted identity trees of height 5.

Terms

a(0) =1a(1) =4a(2) =9a(3) =18a(4) =34a(5) =61a(6) =108a(7) =187a(8) =318a(9) =528a(10) =871a(11) =1417a(12) =2288a(13) =3662a(14) =5825a(15) =9203a(16) =14471a(17) =22639a(18) =35266a(19) =54725a(20) =84607a(21) =130379a(22) =200287a(23) =306787a(24) =468607a(25) =713970a(26) =1085060a(27) =1645181a(28) =2488771a(29) =3756778