Answer
$1,1,2,3,5$
Work Step by Step
$a_{n+1} = a_n + a_{n-1}$
$a_0 = 1$
$a_1 = 1$
For the first four terms, we need to find $a_1, a_2, a_3$, and $a_4$
$a_1 = 1$
$a_2 = a_1 + a_0 = 2$
$a_3 = a_2 + a_1 = 3$
$a_4= a_3 + a_2 = 5$
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