Problem 2, Iberoamerican Olympiad 2010
Source:
September 24, 2010
inductionnumber theory proposednumber theory
Problem Statement
Determine if there are positive integers 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.