Define a
roux array as a 1-D array such that, when it's reversed, it represents the sequence of square numbers 1, 4,
9, 16, ... with 0s interwoven between them.

Examples

Note: odd-length arrays begin with a square number while even-length arrays begin with a zero.

Implement a function called make_roux(n) that inputs n, the desired size of the array, and outputs the corresponding roux array. Then test it on the examples above.