Number of binary rooted trees with n leaves spanning an initial interval of positive integers and all non-leaf nodes having out-degree 2.
A319590
Number of binary rooted trees with n leaves spanning an initial interval of positive integers and all non-leaf nodes having out-degree 2.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =58a(4) =576a(5) =7440a(6) =117628a(7) =2201014a(8) =47552012a(9) =1164812674a(10) =31898271660a(11) =965666303078
External references
- oeis: A319590