a(n) is the number of rooted trees with 2n vertices n of whom are leaves.
A185650
a(n) is the number of rooted trees with 2n vertices n of whom are leaves.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =39a(4) =214a(5) =1268a(6) =7949a(7) =51901a(8) =349703a(9) =2415348a(10) =17020341a(11) =121939535a(12) =885841162a(13) =6511874216a(14) =48359860685a(15) =362343773669
External references
- oeis: A185650