To determine
a6 and
a1, we'll substitute
n=6 and
n=11 in the formula and calculate. We start with
n=6.
an=3⋅2n−1
a6=3⋅26−1
a6=3⋅25
a6=3⋅32
a6=96
Now calculate
a11.
an=3⋅2n−1
a11=3⋅211−1
a11=3⋅210
a11=3⋅1024
a11=3072
The elements are therefore
a6=96 and
a11=3072.