-5011domain: ZAppears in sequencesa(n) = (-n^3 + 9n^2 - 5n + 3)/3.at n=28A161702First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 377", based on the 5-celled von Neumann neighborhood.at n=41A271464