Let's say, if two fields in one column has been filled with numerical
increament, i.e. A1 is 2 and A2 is 4. Now I want to fill the whole column
with this increament pattern till row A20. One thing we will all do is to
left click on the fill handle and drag it down to row A20. But if the task is
to fill to row 500, the mouse draging sometime won't be easy to locate the
row. I am wondering anyone can help me to find the keyboard shortcut
equivalent to that drag fill handle action.

Thanks