2160608712domain: NAppears in sequencesNumber of (n+1)X(4+1) 0..2 arrays colored with the upper median plus the lower median minus the minimum of every 2X2 subblock.at n=4A237681Number of (n+1)X(5+1) 0..2 arrays colored with the upper median plus the lower median minus the minimum of every 2X2 subblock.at n=3A237682