153755370824domain: NAppears in sequencesNumber of (n+1)X5 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one.at n=4A206081Number of (n+1)X6 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one.at n=3A206082