So I have a formula,
$${\frac{{{\mathtt{100}}}^{{\mathtt{n}}}}{\left({\mathtt{50}}{\mathtt{\,\times\,}}\left({\mathtt{1}}{\mathtt{\,\small\textbf+\,}}{{\mathtt{100}}}^{\left({\mathtt{n}}{\mathtt{\,-\,}}{\mathtt{1}}\right)}\right)\right)}} = {a}{\left({\mathtt{n}}\right)}$$
for finding the nth term of the sequence, but since It's neither arithmatic nor geometric, I don't know how to find a formula for the sum of the nth terms. Is there even a way to?