Number of ordered (i.e., planar) trees on 2n edges with every subtree at the root having an even number of edges.
A066357
Number of ordered (i.e., planar) trees on 2n edges with every subtree at the root having an even number of edges.
Terms
- a(0) =1a(1) =1a(2) =6a(3) =53a(4) =554a(5) =6362a(6) =77580a(7) =986253a(8) =12927170a(9) =173452334a(10) =2370742868a(11) =32892031042a(12) =462030186916
External references
- oeis: A066357