548901832domain: NAppears in sequencesNumber of (n+1)X(4+1) 0..2 arrays colored with the sum of the upper and lower median values of each 2X2 subblock.at n=4A236352Number of (n+1)X(5+1) 0..2 arrays colored with the sum of the upper and lower median values of each 2X2 subblock.at n=3A236353