The pattern alternates between adding 11 and adding 2. Starting with 11, we add 11 to get 22, then add 2 to get 13, and continue this pattern. Following this sequence, after 17, we add 11, resulting in 28. Therefore, the next number is 28.
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17 cause it is the next prime number
The next number will be 13+21 = 34
16.
22
11