sum is added to itself again and again

Question

What do you call a pattern wherein the sum is added to itself over and again?

For example,

$5 + 5 = 10 + 10 = 20 + 20$ and so on

PS I'm not very familiar with math terms so I'd appreciate a simple answer. Thank you!

Answer 1

This is a geometric progression with a ratio of $2$

Answer 2

I would call it successive doubling.