Number of 2-colored labeled graphs with n nodes.

A058872

Number of 2-colored labeled graphs with n nodes.

Terms

    a(0) =0a(1) =2a(2) =12a(3) =80a(4) =720a(5) =9152a(6) =165312a(7) =4244480a(8) =154732800a(9) =8005686272a(10) =587435092992

External references