29705879570domain: NAppears in sequencesNumber of (n+1)X(4+1) 0..3 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal.at n=4A237312Number of (n+1)X(5+1) 0..3 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal.at n=3A237313