$\"\"$

The sequence is $\"\"$ .

$\"\"$ (1st term)

$\"\"$

$\"\"$ (2nd term)

$\"\"$

$\"\"$ (3rd term)

$\"\"$

$\"\"$ (4th term)

$\"\"$

$\"\"$ (5th term)

$\"\"$

The first five terms are 1, 2, 4, 8, 16. The sequence is not an arithmetic series. $\"\"$

The first five terms are 1, 2, 4, 8, 16. The sequence is not an arithmetic series.