Number of reduced Latin squares of order n; also number of labeled loops (quasigroups with an identity element) with a fixed identity element.

A000315

Number of reduced Latin squares of order n; also number of labeled loops (quasigroups with an identity element) with a fixed identity element.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =4a(4) =56a(5) =9408a(6) =16942080a(7) =535281401856

External references