1284066

Appears in sequences

• Number of inequivalent ways to color a 3 X 3 checkerboard using at most n colors allowing rotations and reflections.at n=6A217331
• Number of inequivalent n X n matrices over an alphabet of size 6 under action of dihedral group of the square D_4.at n=3A286392
• Array read by antidiagonals: T(n,k) is the number of k-colorings of an n X n grid, up to rotations and reflections.at n=48A343097