The first 25 square numbers

the square of 1 is 1
the square of 2 is 4
the square of 3 is 9
the square of 4 is 16
the square of 5 is 25
the square of 6 is 36
the square of 7 is 49
the square of 8 is 64
the square of 9 is 81
the square of 10 is 100
the square of 11 is 121
the square of 12 is 144
the square of 13 is 169
the square of 14 is 196
the square of 15 is 225
the square of 16 is 256
the square of 17 is 289
the square of 18 is 324
the square of 19 is 361
the square of 20 is 400
the square of 21 is 441
the square of 22 is 484
the square of 23 is 529
the square of 24 is 576
the square of 25 is 625

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