68735

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 31 ones.at n=29A031799
• Odd squarefree numbers n > 1 such that lambda(n)^2 = phi(n), where lambda is the Carmichael lambda function and phi is Euler's totient function.at n=36A276980
• Squares where A323809 gets stuck.at n=29A323813
• Least k such that A359247(k) = n, or 0 if no such k exists.at n=36A359657