
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
If the sequence of positive numbers is defined recursively with each term after the first two terms as the sum of all of the previous terms, and the first term is \(a\), the second term is 2, and the sixth term is 56, find the value of \(a\).

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