180781130domain: NAppears in sequencesNumber of (n+1)X(3+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.at n=6A236982Number of (n+1)X(7+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.at n=2A236986