Number of 6-ary rooted trees with n nodes and height exactly 6.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =5a(8) =19a(9) =61a(10) =180a(11) =498a(12) =1318a(13) =3376a(14) =8433a(15) =20659a(16) =49802a(17) =118506a(18) =278857a(19) =650072a(20) =1503003a(21) =3450424a(22) =7870894a(23) =17854238a(24) =40295522a(25) =90531067a(26) =202552028a(27) =451479327a(28) =1002843896a(29) =2220473234