Number of rooted binary MUL-trees with n leaves on the label set [5].
A220818
Number of rooted binary MUL-trees with n leaves on the label set [5].
Terms
- a(0) =5a(1) =15a(2) =75a(3) =495a(4) =3600a(5) =28275a(6) =232500a(7) =1979385a(8) =17287050a(9) =154041450a(10) =1394844375a(11) =12797919900a(12) =118722187125
External references
- oeis: A220818