8872195706domain: NAppears in sequencesNumber of (n+1)X(3+1) 0..3 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock equal.at n=5A237394Number of (n+1)X(6+1) 0..3 arrays with the maximum plus the upper median minus the lower median of every 2X2 subblock equal.at n=2A237397