45872598284domain: NAppears in sequencesNumber of (n+1)X(3+1) 0..3 arrays with the upper median equal to the lower median in every 2X2 subblock.at n=5A235852Number of (n+1)X(6+1) 0..3 arrays with the upper median equal to the lower median in every 2X2 subblock.at n=2A235855