Hi everybody,

Ok, I was inspired by Peter. Here is a very simple problem, but neverless, let's find out the most elegant solution.

There is a table with some sequence unique numbers:

1
3
4
8
15
...

No pattern. Your goal would be to find out all missing numbers (of course, only whole numbers).

For more advanced, I would make the task more difficult: find out all missing prime numbers. The latest problem seems complicated and I don't know solution myself yet...