38585

Appears in sequences

• Numbers n such that phi(phi(n)) + sigma(sigma(n)) - phi(sigma(n)) - sigma(phi(n)) = phi(n).at n=3A066945
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2) + n -1, where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=18A293351
• Positions of powerful terms among the numbers satisfying Euler's condition for odd perfect numbers (A228058).at n=12A388279