Can someone explain to me why this is considered not bounded?
After looking up the definition. I can't seem to understand why this wouldn't be considered bounded.
If there exists a number m such that for every n we say the sequence is bounded below. The number m is sometimes called a lower bound for the sequence.
If there exists a number M such that for every n we say the sequence is bounded above. The number M is sometimes called an upper bound for the sequence.