Number of n-node rooted trees of height 9.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =0a(9) =1a(10) =9a(11) =53a(12) =251a(13) =1043a(14) =3961a(15) =14102a(16) =47816a(17) =156129a(18) =494769a(19) =1530583a(20) =4642490a(21) =13853571a(22) =40779959a(23) =118666510a(24) =341938083a(25) =977028128a(26) =2771407719a(27) =7811504825a(28) =21895173627a(29) =61069528116