2.10.124 Number Series

Condition: Calculate the amount \ (p+q+c+d+e \) formulas of the general member \ (a_ {n} = \ frac {p n+q} {c n^{2}+d n+e} \) of the numerical series \ [[ \ frac {10} {4}-\ frac {15} {8}-\ frac {20} {16}-\ frac {25} {28}-\ frac {30}+\ cdots \]