Number of 6-ary rooted trees with n nodes and height at most 7.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =4a(5) =9a(6) =20a(7) =48a(8) =113a(9) =275a(10) =667a(11) =1627a(12) =3951a(13) =9597a(14) =23215a(15) =56063a(16) =134982a(17) =324340a(18) =777492a(19) =1860365a(20) =4442905a(21) =10593324a(22) =25217480a(23) =59944219a(24) =142295011a(25) =337344737a(26) =798769090a(27) =1889131816a(28) =4462891151a(29) =10531873564