Originally posted by FabianFnasI KNEW primes were involved somehow, but I was having trbl putting it together too... ugh. I hate when I can't figure it out =)
Write down every prime you know: 2, 3, 5, 7, 11, 13, etc.
Mark the 2th, 3rd, 5th, 7th, 11th, 13th, etc, in this list.
What do you get?