wat is the rule for

Input-1,2,3,4,5
Output-3,5,7,9,11

Input +2, increasing in value by 1 each time.

The output sequence appears to be obtained by adding 2 to each number in the input sequence.

To confirm this rule, let's examine the pattern:
Input: 1, 2, 3, 4, 5
Output: 3, 5, 7, 9, 11

When we add 2 to the first number in the input sequence (1), we get the first number in the output sequence (3). Similarly, when we add 2 to the second number in the input sequence (2), we get the second number in the output sequence (5). This pattern continues for every number in the sequence.

Therefore, the rule to get the output sequence from the input sequence is to add 2 to each number.