The number of ways of tiling the n X n grid up to the symmetries of the square by a tile that is fixed under both horizontal and vertical reflection, but not diagonal reflection.
A367522
The number of ways of tiling the n X n grid up to the symmetries of the square by a tile that is fixed under both horizontal and vertical reflection, but not diagonal reflection.
Terms
- a(0) =1a(1) =4a(2) =84a(3) =8292a(4) =4203520a(5) =8590033024
External references
- oeis: A367522