584520435domain: NAppears in sequencesNumber of (n+1)X3 0..2 arrays with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=6A183964Number 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=1A183970