What comes next 1 3 5 7 8 9 10?

Oh, what a lovely sequence of numbers we have here! It looks like we're counting up by 2, then by 2 again, and then by 2 once more. But wait, it seems like we skipped a number! Don't worry, we can gently add in the missing number to continue our pattern. So, the next number in the sequence is 11. Happy little numbers!