311395

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 36.at n=30A031714
• a(n) = 961*n^2 + 31.at n=18A158675
• Numbers n for which phi(n)=sigma(n'), where phi is the Euler totient function, sigma is the sum of divisors and n' the arithmetic derivative of n.at n=28A189057