## Problem of the Week 1197## Triplets
Call an integer n a For example, 7 is a triplet by 1 + 2 + 4 = 7. And it is easy to see that 1, 2, 3, 4, 5, and 6 are not triplets. How many other nontriplets are there?
Source: 2011 India National Olympiad, in latest issue of |

3 December 2014