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Japt, 12 bytes ÊÆgX *VpXÃr+ Loops through the range of integers 0 to n-1, calculates each term, and sums. Try it
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#1: Initial revision
# [Japt](https://github.com/ETHproductions/japt), 12 [bytes](https://en.wikipedia.org/wiki/ISO/IEC_8859-1) ÊÆgX *VpXÃr+ Loops through the range of integers 0 to n-1, calculates each term, and sums. [Try it](https://petershaggynoble.github.io/Japt-Interpreter/?v=1.4.6&code=ysZnWCAqVnBYw3Ir&input=WzEsIDJdIDQ)