187274820848domain: NAppears in sequencesNumber of (n+1)X(2+1) 0..3 arrays with the maximum minus the minimum of every 2X2 subblock equal.at n=6A237334Number of (n+1)X(7+1) 0..3 arrays with the maximum minus the minimum of every 2X2 subblock equal.at n=1A237339