112888domain: NAppears in sequencesNumber of (n+1)X(n+1) 0..3 arrays with the maximum of every 2X2 subblock equal.at n=1A236941Number of (n+1)X(2+1) 0..3 arrays with the maximum of every 2X2 subblock equal.at n=1A236943T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum of every 2X2 subblock equal.at n=4A236949