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13=3+10 25=9+16 36=15+21 49=18+31
6+15=21 36+45=81 9+16=25 30+34=64
13 = 3+10 25 = 9+16 49 = 18+31 36 = 15+21
20=4+16 25=9+16 36=15+21 40=12+28
20=4+16 25=9+16 36=15+21 40=12+28
6+15=21 36+45=81 9+16=25 30+34=64
13 = 3+10 25 = 9+16 49 = 18+31 36 = 15+21
)289 ( )1024 ( )1225 ( )1378
A.13=3+10 25=9+16 36=15+21 49=18+31
13 = 3+10 25 = 9+16 36 = 16+20 49 = 21+28
13=3+10 25=9+16 36=15+21 49=18+31
13 = 3 + 10 36 = 15 + 21 25 = 9 + 16 49 = 18 + 31
6+15=21 36+45=81 9+16=25 30+34=64
)289 ( )1024 ( )1225 ( )1378