I am having a hard time with understanding how to set up the basis for the chicken nuggets problem. Could someone point me in the right direction?

Question

anonymous · Answer

do you understand the equation that was given ion the pset?
6a + 9b + 20c = n

basically you need to figure out how to generate different combinations of a, b, c and plug them in to the formula to get n.
a   b   c       n
1   0   0      6
2   0   0      12
3   0   0      18
0   1   0      9
1   1   0      15
2   1   0      21
.
.
.

anonymous · Answer

Yeah, I get that so far. 
I figured I would do something similar to this:

anonymous · Answer

Sorry, be right back.