How many ways are there to write 2016as sum of twos and threes, ignorging orders?
2016/6 = 336
For each of those groups of 6, we can write it as 2 2 2 or 3 3.
We can choose 0 "2 2 2" all the way up to 336 "2 2 2".
336 + 1 = 337
=^._.^=
+45 
