Number of labeled mappings from n points to themselves with unique square root (endofunctions).
A368867
Number of labeled mappings from n points to themselves with unique square root (endofunctions).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =2a(4) =56a(5) =544a(6) =5064a(7) =69348a(8) =1210320
External references
- oeis: A368867