Given an=6an−1−9an−2a_n = 6a_{n-1} - 9a_{n-2}an=6an−1−9an−2 with a0=1,a1=3a_0 = 1, a_1 = 3a0=1,a1=3. What is a2a_2a2?
999
000
181818
272727