Let's try another one like this.

Let's build the sequence whose nth term is given by

and 

Here we go!

let n = 2:

let n = 3:

let n = 4:

let n = 5:

So, the sequence is

*When you build a sequence, finding the first five terms will usually do the job.

YOUR TURN:

Build the sequence (the first five terms) whose nth term is given by