1213440

Appears in sequences

• 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 489", based on the 5-celled von Neumann neighborhood.at n=20A288649
• Trajectory of 270 under repeated application of k -> (phi(k)+sigma(k))/2.at n=28A291789