Number of plane trees with n nodes where the sequence of branches directly under any given node with at least two branches has empty intersection.
A319378
Number of plane trees with n nodes where the sequence of branches directly under any given node with at least two branches has empty intersection.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =13a(5) =39a(6) =118a(7) =375a(8) =1225a(9) =4079a(10) =13794a(11) =47287a(12) =163962a(13) =573717a(14) =2023800
External references
- oeis: A319378