b1=16*1-18*1+14=12
b2=16*4-18*2+14=42
b3=16*9-18*3+14=104
b4=16*16-18*4+14=198
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b1=16*1-18*1+14=12
b2=16*4-18*2+14=42
b3=16*9-18*3+14=104
b4=16*16-18*4+14=198