45610599689domain: NAppears in sequencesNumber of (n+1) X (n+1) 0..2 arrays with the upper median equal to the lower median in every 2 X 2 subblock.at n=4A235973Number of (n+1)X(5+1) 0..2 arrays with the upper median equal to the lower median in every 2X2 subblock.at n=4A235978