Number of n X n checkered tori, allowing rotation and/or reflection of the rows and/or the columns.
A209251
Number of n X n checkered tori, allowing rotation and/or reflection of the rows and/or the columns.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =36a(4) =1459a(5) =340880a(6) =478070832
External references
- oeis: A209251