537157696

Appears in sequences

• Number of equivalence classes of n-valued Post functions of 2 variables under action of semi-direct product of symmetric group S_2 and complementing group D(2,n).at n=2A001326
• Number of inequivalent n X n matrices over GF(4) under action of dihedral group of the square D_4.at n=4A054751
• Number of inequivalent ways to color a 4 X 4 checkerboard using at most n colors allowing rotations and reflections.at n=4A217338
• 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=40A343097