Number of nonisomorphic commutative groupoids with 1 idempotent and no symmetry.
A030264
Number of nonisomorphic commutative groupoids with 1 idempotent and no symmetry.
Terms
- a(0) =1a(1) =2a(2) =51a(3) =18330a(4) =104124850
External references
- oeis: A030264