2214457domain: NAppears in sequencesHalf the number of (n+1) X (n+1) 0..2 arrays with no 2 X 2 subblock having sum 4.at n=2A183783Half the number of (n+1)X4 0..2 arrays with no 2X2 subblock having sum 4.at n=2A183786T(n,k)=Half the number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock having sum 4.at n=12A183792