7013479domain: NAppears in sequencesNumber of (n+1)X(1+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock equal.at n=7A237101T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum minus the upper median of every 2X2 subblock equal.at n=28A237108