Number of simple graphs with n vertices rooted at a pair of distinguished vertices.
A304070
Number of simple graphs with n vertices rooted at a pair of distinguished vertices.
Terms
- a(0) =0a(1) =2a(2) =8a(3) =40a(4) =240a(5) =1992a(6) =24416a(7) =483040a(8) =16343872a(9) =982635280a(10) =106979975168
External references
- oeis: A304070