Answer:
continued: 10, 13, 14, 17, 18, 21....and so on
Step-by-step explanation:
The pattern for the sequence is it's counting by 1's then 3's then 1's and 3's again. It starts 1, count by one, you get 2, then the sequence changes. 2, count by three's, you get 5. This is the sequence but shown 1, 2 3 4 5, 6 7 8 9.