111110111110domain: NAppears in sequencesa(n) is the concatenation of n 1's, 0, n 1's and 0.at n=5A173521Binary representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 211", based on the 5-celled von Neumann neighborhood.at n=11A279874