Question: Find a formula for the n Superscript thnth partial sum of the series 7 plus seven halves plus seven fourths plus seven eighths plus midline

Find a formula for the
n Superscript thnth
partial sum of the series
7 plus seven halves plus seven fourths plus seven eighths plus midline ellipsis plus StartFraction 7 Over 2 Superscript n minus 1 EndFraction plus midline ellipsis7+72+74+78++72n1+
and use it to find the series' sum if the series converges.

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