Only repeat in the Fibonacci sequence

The Fibonacci sequence is a series of numbers in which each number is the sum of the two preceding numbers. The sequence begins with 0 and 1, and then each subsequent number is the sum of the two preceding ones. Therefore, the sequence goes 0, 1, 1, 2, 3, 5, 8, 13, 21, and so on. The crossword question states that the only number that repeats in the Fibonacci sequence is ONE. This is true because the sequence begins with 0 and 1, and every other number in the sequence is the sum of the two preceding numbers. As a result, only one of those numbers can be 1 at any given time. Once the next number is added to the sequence, the 1 moves down the line and there can never be a repeated 1 in the sequence.