105022040225domain: NAppears in sequencesNumber of (n+1) X 4 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=6A183965Number of (n+1)X8 0..2 arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=2A183970