I have a sequence of numbers here, which follow a very simple rule that can be expressed using a single fraction:
1, 2, 10, 11, 13, 15, 20, 22, 25, 28, ...
What is this rule (in particular, what is the fraction), and what are the next few numbers in the sequence?
Since nobody's gotten it yet, I'll add a few hints over the next little while.
(06-16 13:22) 1. The numbers in the sequence never get more than 2 digits long.