Number of normalized Latin squares of order n containing no 2 X 2 Latin subsquare.

A000611

Number of normalized Latin squares of order n containing no 2 X 2 Latin subsquare.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =0a(4) =6a(5) =40a(6) =17760a(7) =2096640a(8) =29659631400

External references