Martingale difference sequence

Martingale difference sequence is a mathematical way of counting numbers. It's a pattern in which each number after the first is the same amount bigger or smaller than the one before it. For example, if you start with the number 5, the next number would be either 5+1 or 5-1. If you then used the number 6, the next number would be 6+1 or 6-1. This pattern would continue until you reach the end of the sequence.