Number of 3-level labeled linear rooted trees with n leaves.
A050351
Number of 3-level labeled linear rooted trees with n leaves.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =37a(4) =365a(5) =4501a(6) =66605a(7) =1149877a(8) =22687565a(9) =503589781a(10) =12420052205a(11) =336947795317
External references
- oeis: A050351