91876domain: NAppears in sequencesa(n) = (6^n - 5^n - 4^n - 3^n + 4*2^n)/2.at n=7A081679Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 737", based on the 5-celled von Neumann neighborhood.at n=40A273480