1-rational- square roots
2
1
=
2
4
=
2
9
=
2
16
=
25
=
2
36
=
49
=
2
64
=
2
81
=
100
=
2
121
=
144
=
2
169
=
2
196
=
2
225
=
256
=
2
289
=
324
=
361
=
400
=
100
=
2
81
=
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