
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
Given an arithmetic sequence {a<sub>n</sub>} with the sum of the first n terms denoted as S<sub>n</sub>, and S<sub>5</sub>\=30, S<sub>10</sub>\=110.

1. Find S<sub>n</sub>.
2. Let $$T_{n}= \frac {1}{S_{1}}+ \frac {1}{S_{2}}+…+ \frac {1}{S_{n}}$$, find T<sub>n</sub>.

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