195683299844domain: NAppears in sequencesNumber of (n+1)X(3+1) 0..3 arrays with the upper median of every 2X2 subblock equal.at n=4A237071Number of (n+1)X(5+1) 0..3 arrays with the upper median of every 2X2 subblock equal.at n=2A237073T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the upper median of every 2X2 subblock equal.at n=23A237076