The number of strongly connected digraphs with n vertices and n+1 edges.
A272582
The number of strongly connected digraphs with n vertices and n+1 edges.
Terms
- a(0) =0a(1) =9a(2) =84a(3) =720a(4) =6480a(5) =63000a(6) =665280a(7) =7620480a(8) =94348800a(9) =1257379200a(10) =17962560000a(11) =273988915200
External references
- oeis: A272582