MathDB
Problem 2, Iberoamerican Olympiad 2010

Source:

September 24, 2010
inductionnumber theory proposednumber theory

Problem Statement

Determine if there are positive integers a,ba, b such that all terms of the sequence defined by x_{1}= 2010,x_{2}= 2011\\ x_{n+2}= x_{n}+ x_{n+1}+a\sqrt{x_{n}x_{n+1}+b}  (n\ge 1) are integers.