$\"\"$

The sequence is $\"\"$ .

Find the common difference by subtracting successive terms.

$\"\"$ ( $\"\"$ term)

The common difference is $\"\"$ .

Add $\"\"$ to the last term of the sequence to get the next term.

$\"\"$

Therefore, the next three terms in the sequence are $\"\"$

Thus, the sequence is $\"\"$ .

$\"\"$

The sequence is $\"\"$ .