Number of ways of tiling the n X n torus up to diagonal and antidiagonal reflections of the square by a tile that is fixed under only 180-degree rotations.

A368141

Number of ways of tiling the n X n torus up to diagonal and antidiagonal reflections of the square by a tile that is fixed under only 180-degree rotations.

Terms

    a(0) =1a(1) =4a(2) =24a(3) =1154a(4) =337600a(5) =477339020

External references