1615917domain: NAppears in sequencesNumber of (n+1) X (1+1) 0..2 arrays with the upper median equal to the lower median in every 2 X 2 subblock.at n=7A235974T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the upper median equal to the lower median in every 2X2 subblock.at n=28A235981