Question 949937
{{{system(a[13]=136=a[1]+(13-1)d, a[1]=5d)}}}


{{{5d+12d=136}}}


{{{17d=136}}}


{{{17d/17=136/17}}}


{{{d=8}}}



Let n be the index of the sequence.
General Term Now {{{5d+(n-1)*8}}}
{{{5*8+(n-1)*8}}}
{{{highlight(40+8(n-1))}}}------general term


Let n=16 to answer your question.