56247domain: NAppears in sequencesa(n) = 60*(n^5/120 + n^4/24 + n^3/6 + n^2/2 + n + 1).at n=8A127883Decimal 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 870", based on the 5-celled von Neumann neighborhood.at n=15A284305