17016861domain: NAppears in sequencesNumber of (n+1) X (2+1) 0..2 arrays with every 2 X 2 subblock summing to 2 4 or 6.at n=6A251329Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock summing to 2 4 or 6.at n=1A251334T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock summing to 2 4 or 6.at n=29A251335