32449786403domain: NAppears in sequencesNumber of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock having two distinct values, and new values 0..3 introduced in row major order.at n=4A209806Number of (n+1)X6 0..3 arrays with every 2X2 subblock having two distinct values, and new values 0..3 introduced in row major order.at n=4A209811