Number of labeled plane trees with n edges in which no vertex has outdegree one.
A128614
Number of labeled plane trees with n edges in which no vertex has outdegree one.
Terms
- a(0) =0a(1) =6a(2) =24a(3) =360a(4) =4320a(5) =75600a(6) =1451520a(7) =33022080a(8) =841881600a(9) =24069830400a(10) =759217536000
External references
- oeis: A128614