69880910510domain: NAppears in sequencesNumber of (n+1)X(2+1) 0..3 arrays with the maximum minus the upper median of every 2X2 subblock equal.at n=6A237892Number of (n+1)X(7+1) 0..3 arrays with the maximum minus the upper median of every 2X2 subblock equal.at n=1A237897