This loop implements the same task as the workflow named "Counting Loop 1". However, in Counting Loop 1 we were adding the iteration number to the x value, because that loop has no memory of previous iterations. The recursive loop actually can pass the current results to the next iteration through the second input port of the Recursive Lopp End node. Because of its memory, in this loop we can use x = x+1 and at each step the x value will be incremented of 1. Results however is the same as in Counting Loop 1, as you can see from the Scatter Plot View.