170872144domain: NAppears in sequencesNumber of (n+1)X(3+1) 0..2 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 2.at n=6A233639Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 2.at n=2A233643