The number of ways of tiling the n X n torus up to the symmetries of the square by a tile that is fixed under 90-degree rotation but not reflection.
A367534
The number of ways of tiling the n X n torus up to the symmetries of the square by a tile that is fixed under 90-degree rotation but not reflection.
Terms
- a(0) =1a(1) =4a(2) =14a(3) =613a(4) =168832a(5) =238686222
External references
- oeis: A367534