Write a Formula for the General Term, or Nth Term $$1 , \frac { 2 } { 3 } , \frac { 1 } { 3 } , \frac { 2 } { 15 } , \ldots$$

Multiple Choice

Write a formula for the general term, or nth term, for the given sequence.
- $$1 , \frac { 2 } { 3 } , \frac { 1 } { 3 } , \frac { 2 } { 15 } , \ldots$$

A) $a _ { n } = \frac { 2 n } { ( n + 1 ) ! }$
B) $a _ { n } = \frac { 2 ^ { n + 1 } } { n ! }$
C) $a _ { n } = \frac { 2 ^ { n } } { n ! }$
D) $a _ { n } = \frac { 2 ^ { n } } { ( n + 1 ) ! }$