200640

Appears in sequences

• Numbers k such that phi(k) is equal to A008473(k).at n=21A039779
• a(n) = 196*n^2 - 2*n.at n=31A158224
• a(n) is the least k such that there are exactly n solutions in positive integers to the equation x^3 + y^2 = k^2.at n=8A382838