190555domain: NAppears in sequencesDecimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 902", based on the 5-celled von Neumann neighborhood.at n=17A284358Number of nonisomorphic 2-sets of permutations of an n-set.at n=8A362764