State the rule of the perfect squares given the sequence shown below that starts with n = 1 1, 4, 9, 16, 26...

Given:
the sequence shown below that starts with n = 1
[tex]1,4,9,16,25,\ldots[/tex]The rule of the sequence will be as follows"
The first term = 1, when n = 1
The second term = 4 = 2², when n = 2
The third term = 9 = 3², when n = 3
..
..
So, the rule will be:
[tex]a_n=n^2[/tex]