How do you write an equation for the nth term of the geometric sequence #4, 8, 16, ...#?
...but see below
It seems that currently the most common usage is that the initial value of a sequence is considered the "first" value.
That is for the given geometric sequence: 4, 8, 16, ...
Each term after the first increases the immediately prior term by a factor of
Less common these days (but the version I learned long ago) was to call the initial value of the sequence, the
That is for the given sequence: 4, 8, 16, ...
and the equation for the