Number of connected functions on n labeled nodes.
A001865
Number of connected functions on n labeled nodes.
Terms
- a(0) =1a(1) =3a(2) =17a(3) =142a(4) =1569a(5) =21576a(6) =355081a(7) =6805296a(8) =148869153a(9) =3660215680a(10) =99920609601
External references
- oeis: A001865