Number of harmonious graphs with n edges and at most n vertices, allowing self-loops.
A340234
Number of harmonious graphs with n edges and at most n vertices, allowing self-loops.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =36a(4) =243a(5) =1728a(6) =16384a(7) =160000a(8) =1953125a(9) =24300000a(10) =362797056a(11) =5489031744a(12) =96889010407
External references
- oeis: A340234