269180domain: NAppears in sequencesBase 5 digits are, in order, the first n terms of the periodic sequence with initial period 3,2,1,0.at n=7A037794Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 110", based on the 5-celled von Neumann neighborhood.at n=9A270169