Number of n-node rooted identity trees of height at most 8.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =6a(6) =12a(7) =25a(8) =52a(9) =112a(10) =238a(11) =503a(12) =1053a(13) =2194a(14) =4547a(15) =9406a(16) =19401a(17) =39965a(18) =82189a(19) =168837a(20) =346380a(21) =709917a(22) =1453380a(23) =2972636a(24) =6074138a(25) =12400794a(26) =25295272a(27) =51556337a(28) =104998985a(29) =213681811