16976493domain: NAppears in sequencesNumber of (n+1) X (1+1) 0..2 arrays with every 2 X 2 subblock summing to 3 4 or 5.at n=7A251344T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock summing to 3 4 or 5.at n=28A251351