1. Sequence Problem

Find an for this sequence:
7, 5, 7, 5, 7, 5, ...

2. Originally Posted by bearej50
Find an for this sequence:
7, 5, 7, 5, 7, 5, ...
Surely it must be 7 or 5...

3. Hello, bearej50!

$\text{Find }a_n\text{ for this sequence: }\;7, 5, 7, 5, 7, 5,\:\hdots$

. . $a_n \;=\;6 - (-1)^n$