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,2²=4
,3²=9
,4²=16
,5²=25
6²=36
7²=49
,8²=64
,9²=81
10²=100
,11²=121
,12²=144
,13²=169
,14²=196
,15²=225
,16²=256
,17²=289
,18²=324
,19²=361
,20²=400