what's the pattern?

Question

1,4,9,1,6,2,5,3,6,4,9,6,4

Answer 1

This is the square numbers.

1 ^ 2 = 1

2 ^ 2 = 4

3 ^ 2 = 9

4 ^ 2 = 16

5 ^ 2 = 25

6 ^ 2 = 36

7 ^ 2 = 49

8 ^ 2 = 64

Now put hyphens between EVERY digit:

1-4-9-1-6-2-5-3-6-4-9-6-4