Number of labeled simple graphs with n vertices whose covered portion has exactly two automorphisms.
A330345
Number of labeled simple graphs with n vertices whose covered portion has exactly two automorphisms.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =6a(4) =42a(5) =700a(6) =16995
External references
- oeis: A330345