2691633954domain: NAppears in sequencesNumber of (n+1)X(4+1) 0..2 arrays with the upper median unequal to the lower median in every 2X2 subblock.at n=4A236274Number of (n+1)X(5+1) 0..2 arrays with the upper median unequal to the lower median in every 2X2 subblock.at n=3A236275