What are the next two terms in the pattern 3, 6 5 10 9 18 17?

Its double a number then minus 1 so double of 17 is 34 then minus 1 is 33

next 2 terms are 34 and 33

The rule for the pattern is:

- - Double the previous term.

- - Subtract 1 from the previous term.

- - Double the previous term.

- - Subtract 1 from the previous term.

- - Double the previous term.

- - Subtract 1 from the previous term.

.

.

.

etc.

So after 17, the next two terms are 34 and 33.