It's a mathematical induction type of problem:
Prove that for all integers:
133 | 11^(n+2) + 12^(2n+1) where 133 here is divider of 11^(n+2) + 12^(2n+1)

So far I've checked statement to be true for n=1 and n=k
133 | 11^(k+2) + 12^(2k+1)
11^(k+2) + 12^(2k+1) = 133m

but I have a problem with proving n=k+1