Number of 9-colorings of an n X n grid, up to rotational symmetry.
A047944
Number of 9-colorings of an n X n grid, up to rotational symmetry.
Terms
- a(0) =1a(1) =9a(2) =1665a(3) =96870249
External references
- oeis: A047944
A047944
Number of 9-colorings of an n X n grid, up to rotational symmetry.