768413domain: NAppears in sequencesConstant term in the reduction by (x^2 -> x + 1) of the polynomial p(n,x) defined below at Comments.at n=13A192909Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 593", based on the 5-celled von Neumann neighborhood.at n=9A273120