Number of nonequivalent monoids of order n in which the action of the unit group on the maximal ideal is nontrivial.

A176142

Number of nonequivalent monoids of order n in which the action of the unit group on the maximal ideal is nontrivial.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =2a(4) =5a(5) =58a(6) =428a(7) =5539a(8) =101082a(9) =9269715

External references