Number of graphs with loops spanning n labeled vertices.
A322661
Number of graphs with loops spanning n labeled vertices.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =45a(4) =809a(5) =28217a(6) =1914733a(7) =254409765a(8) =66628946641
External references
- oeis: A322661