44280784440domain: NAppears in sequencesNumber of (n+1)X(3+1) 0..2 arrays with no 2X2 subblock having x11-x00 less than x10-x01.at n=6A251060Number of (7+1)X(n+1) 0..2 arrays with no 2X2 subblock having x11-x00 less than x10-x01.at n=2A251071