655090

Appears in sequences

• Number of 2-colorings of a 4 X n rectangle such that no nontrivial subsquare has monochromatic corners.at n=6A255255
• Number A(n,k) of 2-colorings of a k X n rectangle such that no nontrivial subsquare has monochromatic corners; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=59A255256
• Number A(n,k) of 2-colorings of a k X n rectangle such that no nontrivial subsquare has monochromatic corners; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=61A255256