14977205669domain: NAppears in sequencesNumber of (n+1)X(n+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock equal.at n=4A236738Number of (n+1)X(5+1) 0..2 arrays with the upper median plus the lower median of every 2X2 subblock equal.at n=4A236743