48557573047domain: NAppears in sequencesNumber of (n+1) X (n+1) 0..2 arrays with the upper median minus the lower median of every 2 X 2 subblock equal.at n=4A236729Number of (n+1)X(5+1) 0..2 arrays with the upper median minus the lower median of every 2X2 subblock equal.at n=4A236734