Question 697721
<pre>
That's not a geometric sequence.

g, 2g, 4g would be a geometric sequence with common ratio 2, and
the next two terms would be 8g and 16g 

But having 1 for the first term keeps it from being a geometric sequence.

If it were

g/2, g, 2q, 4g then it would be a geometric sequence, with common
ratio 2, and the next two terms would be 8g and 16g.

But the first term cannot be 1.  Do you copy it wrong?

Edwin</pre>