Answer
1, $\frac{4}{5}$, $\frac{3}{5}$,$\frac{8}{17}$, $\frac{5}{13}$
Work Step by Step
$a_{1}$ = $\frac{2*1}{1^{2}+1}$ = 1
$a_{2}$ = $\frac{2*2}{2^{2}+1}$ = $\frac{4}{5}$
$a_{3}$ = $\frac{2*3}{3^{2}+1}$ = $\frac{3}{5}$
$a_{4}$ = $\frac{2*4}{4^{2}+1}$ = $\frac{8}{17}$
$a_{5}$ = $\frac{2*5}{5^{2}+1}$ = $\frac{5}{13}$
