615149254565domain: NAppears in sequencesNumber of (n+1)X5 0..2 arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=5A183966Number of (n+1) X 7 0..2 arrays with no 2 X 2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=3A183968