477120

Appears in sequences

• Numbers k such that 11^phi(k) == 1 (mod k^2), where phi(k) = A000010(k).at n=29A253016
• Value of T[2] after the n-th iteration, when the map T is initialized with T[1] = 1 and in subsequent iterations, T[v] = k + (T[v] if defined else 0) for all key-value pairs (k, v) in T; a(n) = 0 if T[2] isn't defined yet.at n=23A390942