
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
The common ratio of the geometric sequence {a_n} is q < 0, and it is known that a_2 = 1, a_(n+2) = a_(n+1) + 2a_n. Find the sum of the first 2014 terms of {a_n}.

Present the answer in LaTex format: \boxed{Your answer}
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