Posting the A-Z of Dan Brown's books through his words, characters, places and more. Welcome to the A-Z April 2015 challenge...
F is for Fibonacci
"This is the Fibonacci sequence," she declared, nodding towards the piece of paper in Fache's hand. "A progression in which each term is equal to the sum of the two preceding terms."
Fache studied the numbers. Each term was indeed the sum of the two previous, and yet Fache could not imagine what the relevance of all this was to Sauniere's death.
"Mathematician Leonardo Fibonacci created this succession of numbers in the thirteenth century..."