8590557312

Appears in sequences

• Number of n X n binary matrices under action of dihedral group of the square D_4.at n=6A054247
• Number of tilings of the n X n grid, using diagonal lines to connect the grid points.at n=5A295229
• 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=42A343097