The numbers indicate the Fibonacci Sequence which is simply a
Sequence in which the next number is the sum of the two numbers in front
Of it. (1+1=2, 2+1=3, 3+2=5, 5+3=8; thus 1,1,2,3,5,8) This being like a
Hint and all, it means that the number you need to unlock the box is
Related to this. Quite simply, you just need the next numbers in the
Sequence, so it's solved like this:
5+8=13, 8+13=21, 13+21=34 or 13, 21, 34
Unlock the box with the combination 132134