Answer
$G_{1}=1$
$G_{2}=1$
$G_{3}=2$
$G_{4}=3$
$G_{5}=5$
$G_{6}=8$
$G_{7}=13$
$G_{8}=21$
$G_{9}=34$
$G_{10}=55$
Similar to Fibonacci sequence.
Work Step by Step
We are given:
$G_n=\frac{1}{\sqrt{5}}(\frac{(1+\sqrt{5})^n-(1-\sqrt{5})^n}{2^n})$
We evaluate using a calculator:
$G_{1}=1$
$G_{2}=1$
$G_{3}=2$
$G_{4}=3$
$G_{5}=5$
$G_{6}=8$
$G_{7}=13$
$G_{8}=21$
$G_{9}=34$
$G_{10}=55$
We compare to the Fibonacci sequence:
$0, 1, 1, 2, 3, 5, 8, 13, 21, 34$...
And we see that we get the same values.