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floor(sqrt(1-(j 0.0625)^2) sqrt(2)/ 0.0625)^2 + (4 sum floor((2 sqrt(1-(j 0.0625)^2 -( 0.0625/2 floor(sqrt(1-(j 0.0625)^2) sqrt(2)/0.0625) +k 0.0625)^2))/0.0625 ), where k=1 to 4)
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