The number of combinatorial equivalence classes of n-endomorphisms on a rank-3 semigroup.

A257919

The number of combinatorial equivalence classes of n-endomorphisms on a rank-3 semigroup.

Terms

    a(0) =7a(1) =304a(2) =9958a(3) =288280a(4) =7973053a(5) =217032088a(6) =5875893676a(7) =158794026640

External references