Number of series-reduced rooted trees whose leaves are sets with a total of n elements covering an initial interval of positive integers.
A330764
Number of series-reduced rooted trees whose leaves are sets with a total of n elements covering an initial interval of positive integers.
Terms
- a(0) =1a(1) =3a(2) =18a(3) =194a(4) =2944a(5) =57959a(6) =1398858a(7) =39981994a(8) =1320143478a(9) =49439258516
External references
- oeis: A330764