Number of hybrid 6-ary trees with n internal nodes.
A239109
Number of hybrid 6-ary trees with n internal nodes.
Terms
- a(0) =1a(1) =2a(2) =23a(3) =375a(4) =7138a(5) =148348a(6) =3262975a(7) =74673216a(8) =1759690865a(9) =42412172598
External references
- oeis: A239109