MathDB
2016 General #5: Sequences

Source:

November 15, 2016
HMMT

Problem Statement

Let the sequence {ai}i=0\{a_i\}^\infty_{i=0} be defined by a0=12a_0 =\frac12 and an=1+(an11)2a_n = 1 + (a_{n-1} - 1)^2. Find the product i=0ai=a0a1a2\prod_{i=0}^\infty a_i=a_0a_1a_2\ldots