94207domain: NPropertiesPrimalityPrimeyesAppears in sequencesDecimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 825", based on the 5-celled von Neumann neighborhood.at n=18A284185a(n) = 23*2^n - 1.at n=12A291557Prime numbersat n=9087