601976968domain: NAppears in sequencesNumber of (n+1) X (1+1) 0..3 arrays with the maximum of every 2 X 2 subblock equal.at n=6A236942Number of (n+1)X(7+1) 0..3 arrays with the maximum of every 2X2 subblock equal.at n=0A236948T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum of every 2X2 subblock equal.at n=21A236949