Number of labeled commutative monoids of order n.

A058155

Number of labeled commutative monoids of order n.

Terms

    a(0) =1a(1) =4a(2) =27a(3) =376a(4) =7430a(5) =233340a(6) =10013094a(7) =618332080a(8) =70437029472

External references