Number of n-node rooted trees of height 6.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =6a(8) =26a(9) =94a(10) =308a(11) =941a(12) =2744a(13) =7722a(14) =21166a(15) =56809a(16) =149971a(17) =390517a(18) =1005491a(19) =2564164a(20) =6485901a(21) =16289602a(22) =40659669a(23) =100934017a(24) =249343899a(25) =613286048a(26) =1502515487a(27) =3667953650a(28) =8925161513a(29) =21652815724