Odd numbers that can be written as phi(k) + d(k) for more than one k, where phi(k) = A000010(k) is Euler's totient function and d(k) = A000005(k) is the number of divisors of k.

A357918

Odd numbers that can be written as phi(k) + d(k) for more than one k, where phi(k) = A000010(k) is Euler's totient function and d(k) = A000005(k) is the number of divisors of k.

Terms

    a(0) =2061a(1) =4131a(2) =36981a(3) =78765a(4) =14054589a(5) =889978059a(6) =110543990589

External references