Consider the sequence an=(1+2n)3na_n = \left(1 + \frac{2}{n}\right)^{3n}an=(1+n2)3n. What is limn→∞an\lim_{n \to \infty} a_nlimn→∞an?
e6e^6e6
e2e^2e2
e3e^3e3
eee