What are the next numbers in this sequence?

4, 5, 8, 8, 9, 9, 12, 13, 13, 13, ?, ?

(In reply to i likt it by Ady TZIDON)

I nearly got splinters scratching my head.  I did find the explanation somewhat of a problem in itself, but ... with a bit of due thought ... I have to conclude that it is better than anything that I tried.

If this is what Lisa had in mind, it certainly was a great teaser.

Posted by brianjn on 2005-07-25 12:51:09