Plotting many terms in a sequence is slow

[walmsl1]

Even for a simple sequence like a_n=2n, plotting 100 terms as points on a graph takes 5-7 seconds or longer. This is a manageable time to wait and rarely is there a scenario where more than 100 terms are needed, but it's not ideal for interactive problems I can envision.

Perhaps there is a way to have the domain of a function be the positive integers, or a component designed specifically for sequences.