221183

Appears in sequences

• a(n) = 54n^3 - 1.at n=15A181968
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 974", based on the 5-celled von Neumann neighborhood.at n=17A284542
• Decimal representation of the diagonal from the origin to the corner of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 389", based on the 5-celled von Neumann neighborhood.at n=25A287978