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

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =11a(7) =19a(8) =31a(9) =52a(10) =85a(11) =140a(12) =228a(13) =370a(14) =594a(15) =954a(16) =1519a(17) =2412a(18) =3814a(19) =6006a(20) =9419a(21) =14726a(22) =22938a(23) =35612a(24) =55125a(25) =85065a(26) =130900a(27) =200875a(28) =307446a(29) =469342