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November 25th, 2006, 11:37 PM  #1 
Member Joined: Nov 2006 Posts: 54 Thanks: 0  A 1371 Puzzle
Given the sequence : A_0 = 1; A_1 = 2, and: A_(n+1) = A_n + A_(n1)/(1 + (A_n  1)^2), for n>1. Prove that 52 < A_1371 < 65 NOTE: I found this problem under the list of "Unsolved Problems" in a Mathematical Olympiad Book. 
June 18th, 2009, 06:35 PM  #2 
Newbie Joined: Jun 2009 Posts: 9 Thanks: 0  Re: A 1371 Puzzle
After calculated I had A_1371 = 52.41503287 so 52 < A_1371 < 65


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