IMO Shortlist 2000 problem C2
Dodao/la:
arhiva2. travnja 2012. A staircase-brick with 3 steps of width 2 is made of 12 unit cubes. Determine all integers
for which it is possible to build a cube of side
using such bricks.
%V0
A staircase-brick with 3 steps of width 2 is made of 12 unit cubes. Determine all integers $n$ for which it is possible to build a cube of side $n$ using such bricks.
Izvor: Međunarodna matematička olimpijada, shortlist 2000
Školjka 
