The sequence ana_nan satisfies an=4an−1−4an−2a_n = 4a_{n-1} - 4a_{n-2}an=4an−1−4an−2 with a0=1,a1=4a_0 = 1, a_1 = 4a0=1,a1=4. What is ana_nan?
2n2^n2n
(1+n)2n(1+n)2^n(1+n)2n
4n4^n4n
2n+n2^n + n2n+n