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What are the perfect squares?


Starting from zero, add the odd sequence and the answer will be a perfect square.

Ex: Starting from 0, we add the first positive odd number, 1. We find the perfect square 1. Now we add the next odd number, 3. And so on.

0 + 1 = 1
1+ 3 = 4
4 + 5 = 9
9 + 7 = 16
16 + 9 = 25
25 + 11 = 36
36 + 13 = 49

* Submitted by Jorge Pereira Junior