22721738

Appears in sequences

• Number of nX4 0..3 arrays with every element equal to either the sum mod 4 of its vertical neighbors or the sum mod 4 of its horizontal neighbors.at n=6A183487
• Number of nX7 0..3 arrays with every element equal to either the sum mod 4 of its vertical neighbors or the sum mod 4 of its horizontal neighbors.at n=3A183490