Number of increasing ordered rooted trees with n generators.
A108525
Number of increasing ordered rooted trees with n generators.
Terms
- a(0) =1a(1) =3a(2) =27a(3) =429a(4) =9609a(5) =277107a(6) =9772803a(7) =407452221a(8) =19604840481
External references
- oeis: A108525