A=12 + 22 + ... + 20162 B=1*3 + 2*4 + 3*5 + ... +2015*2017 Calculati A-B
B=(2-1)(2+1) + (3-1)(3+1) + ...+ (2016-1)(2016+1)=22-1 + 32-1 + 42-1 + ... + 20162 -1=A-2016 A-B = 2016
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