The first three terms of a sequence are given.
$2, 4, 8...$
Write two different rules for continuing the sequence. Give the next two terms for each rule.
I have found one rule which satisfies this sequence and could not think of another one.
$1)$ The next term is double the previous term:
$2, 4, 8, 16, 32...$
I'm not entirely what another different rule could be... Thank you.