Number of rooted binary leaf-multilabeled trees with n leaves on the label set [3].
A220820
Number of rooted binary leaf-multilabeled trees with n leaves on the label set [3].
Terms
- a(0) =0a(1) =0a(2) =3a(3) =27a(4) =180a(5) =1089a(6) =6333a(7) =36309a(8) =207255a(9) =1184829a(10) =6799473a(11) =39224568a(12) =227554278a(13) =1327688328a(14) =7789644996a(15) =45944320449a(16) =272329169232
External references
- oeis: A220820