• Values of the Euler Function in Various Sequences 

    Banks, William David, 1964-; Ford, Kevin; Luca, Florian; Pappalardi, Francesco; Shparlinski, Igor E. (2005)
    Let φ (n) and λ(n) denote the Euler and Carmichael functions, respectively. In this paper, we investigate the equation φ (n)r = λ(n)s, where r ≥ s ≥ 1 are fixed positive integers. We also study those positive integers n, ...