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 Square Number

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Square Number
The number you get when you multiply an integer by itself.

Example: 4 × 4 = 16, so 16 is a square number.

Here are the first few square numbers:
0 (=0×0)
1 (=1×1)
4 (=2×2)
9 (=3×3)
16 (=4×4)
25 (=5×5)
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