I am trying to learn about how to put numbers into an array with nsnumber. The exact thing I'm stuck with is, To build the sequence in the array, we're going to need a loop. Between creating the sequence array and returning it, declare a for loop whose counter is limited by index + 1 and increments by one.
Since the sequence requires the two previous numbers to calculate the next one, we need to prime the sequence. We're going to need to manually pass in @0 and @1 on the first two iterations of the loop. This is what I have so far.

```
(NSArray *)arrayWithFibonacciSequenceToIndex:(NSUInteger)index
{
NSMutableArray *sequence = [NSMutableArray array];

for(NSUInteger i = 0; i < 1; i++)
{
    index = i+1;

}

return sequence;
}

```

Am I on the right track? I'm not sure if my for loop is correct. Do I put sequence into the for loop and add the nsnumber @0 and @1 there or do I put those numbers into the sequence outside the loop?