21755065689domain: NAppears in sequencesNumber of (n+1)X(n+1) 0..2 arrays with the maximum plus the minimum minus the lower median of every 2X2 subblock equal.at n=4A236820Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the minimum minus the lower median of every 2X2 subblock equal.at n=4A236825