Compute the general term an\displaystyle {a}_{{n}} of the series with the partial sum Sn=77n,n>1\displaystyle {S}_{{n}}={7}-\frac{{7}}{{n}},{n}>{1}.

an=\displaystyle {a}_{{n}}=  

If the sequence of partial sums converges, find its limit S\displaystyle {S}. Otherwise enter DNE.

S=\displaystyle {S}=