13421568

Appears in sequences

• Numbers n such that phi(n)=phi(d_1)^phi(d_1)*phi(d_2)^phi(d_2)* ...*phi(d_k)^phi(d_k) where d_1 d_2 ... d_k is the decimal expansion of n.at n=12A104898
• 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 22", based on the 5-celled von Neumann neighborhood.at n=23A274224