51727

Appears in sequences

• From Apery continued fraction for zeta(3): zeta(3)=6/(5-1^6/(117-2^6/(535-3^6/(1463...)))).at n=11A006221
• Numbers k such that sigma(phi(k)) - phi(sigma(k)) is nonzero and divisible by sigma(k), that is A065395(k)/A000203(k) is a nonzero integer.at n=36A092588
• Number of nXnXn triangular 0..6 arrays with each element equal to the product mod 7 of two neighbors.at n=3A193328