1^2=1；2^2=4；3^2=9；4^2=16；5^2=25
6^2=36；7^2=49；8^2=64；9^2=81；10^2=100
11^2=121；12^2=144；13^2=169；14^2=196；15^2=225
16^2=256；17^2=289；18^2=324；19^2=361；20^2=400
21^2=441；22^2=484；23^2=529；24^2=576；25^2=625
26^2=676；27^2=729；28^2=784；29^2=841；30^2=900
31^2=961；32^2=1024；33^2=1089；34^2=1156；35^2=1225
36^2=1296；37^2=1369；38^2=1444；39^2=1521；40^2=1600
41^2=1681；42^2=1764；43^2=1849；44^2=1936；45^2=2025
46^2=2116；47^2=2209；48^2=2304；49^2=2401；50^2=2500
1^2=1；2^2=4；3^2=9；4^2=16；5^2=25
6^2=36；7^2=49；8^2=64；9^2=81；10^2=100
11^2=121；12^2=144；13^2=169；14^2=196；15^2=225
16^2=256；17^2=289；18^2=324；19^2=361；20^2=400
21^2=441；22^2=484；23^2=529；24^2=576；25^2=625
26^2=676；27^2=729；28^2=784；29^2=841；30^2=900
31^2=961；32^2=1024；33^2=1089；34^2=1156；35^2=1225
36^2=1296；37^2=1369；38^2=1444；39^2=1521；40^2=1600
41^2=1681；42^2=1764；43^2=1849；44^2=1936；45^2=2025
46^2=2116；47^2=2209；48^2=2304；49^2=2401；50^2=2500