199775148domain: NAppears in sequencesNumber of (n+1) X 4 0..2 arrays with the number of clockwise edge increases in every 2 X 2 subblock equal to two.at n=6A205831Number of (n+1)X8 0..2 arrays with the number of clockwise edge increases in every 2X2 subblock equal to two.at n=2A205835