1337733domain: NAppears in sequencesNumber of (n+1) X (1+1) 0..2 arrays with every 2 X 2 subblock summing to 2 4 or 6.at n=7A251328T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock summing to 2 4 or 6.at n=28A251335