Number of labeled hypertrees spanning some subset of {1,...,n}, with singleton edges allowed.
A304968
Number of labeled hypertrees spanning some subset of {1,...,n}, with singleton edges allowed.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =48a(4) =621a(5) =12638a(6) =351987a(7) =12426060a(8) =531225945a(9) =26674100154
External references
- oeis: A304968