32374784domain: NAppears in sequencesExpansion of x^3*(3*x - 2)/(2*x - 1)^3.at n=21A268586Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 209", based on the 5-celled von Neumann neighborhood.at n=24A286701