The ultimate challenge: the 3x+1 problem

The 3x+1 problem: an overview

The 3x+1 problem and its generalizations / Jeffrey C. Lagarias

Survey papers. A 3x+1 survey: number theory and dynamical systems / Marc Chamberland

Generalized 3x+1 mappings: Markov chains and ergodic theory / K.R. Matthews

Generalized 3x+1 functions and the theory of computation / Pascal Michel and Maurice Margenstern

Stochastic modelling and computation papers. Stochastic models for the 3x+1 and 5x+1 problems and related problems / Alex V. Kontorovich and Jeffrey C. Lagarias

Empirical verification of the 3x+1 and related conjectures / Tomás Oliveira E Silva

Reprinted early papers. Cyclic sequences and frieze patterns (The fourth Felix Behrend Memorial Lecture) / H.S.M. Coxeter

Unpredictable iterations / J.H. Conway

Iteration of the number-theoretic function: f(2n) = n, f(2n +1) = 3n + 2 / C.J. Everett

Don't try to solve these problems! / Richard K. Guy

On the motivation and origin of the (3n + 1)-problem / Lothar Collatz

FRACTRAN: a simple universal programming language for arithmetic / J.H. Conway

The 3x+1 problem: an annotated bibliography (1963-1999) / Jeffrey C. Lagarias.