81160939773domain: NAppears in sequencesNumber of (n+1)X(3+1) 0..3 arrays colored with the maximum plus the minimum minus the lower median of every 2X2 subblock.at n=4A236503T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the minimum minus the lower median of every 2X2 subblock.at n=23A236505