19077905domain: NAppears in sequencesNumber of (n+1) X (1+1) 0..2 arrays with every 2 X 2 subblock summing to 2 3 4 5 or 6.at n=6A251383Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock summing to 2 3 4 5 or 6.at n=0A251389T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock summing to 2 3 4 5 or 6.at n=21A251390