4760380domain: NAppears in sequencesNumber of (n+1)X(1+1) 0..2 arrays colored with the difference of the upper median and the lower median in each 2X2 subblock.at n=7A236028T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the difference of the upper median and the lower median in each 2X2 subblock.at n=28A236035