Number of labeled hyperforests spanning {1,...,n} and allowing singleton edges.
A304919
Number of labeled hyperforests spanning {1,...,n} and allowing singleton edges.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =45a(4) =665a(5) =14153a(6) =399421a(7) =14137301a(8) =603647601a(9) =30231588689
External references
- oeis: A304919