The number of connected components of size > 1 over all simple labeled graphs on n nodes.
A223889
The number of connected components of size > 1 over all simple labeled graphs on n nodes.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =7a(4) =66a(5) =1078a(6) =33812a(7) =2124864a(8) =269617328a(9) =68809824944
External references
- oeis: A223889