
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
In the pattern shown below, row 1 (the bottom row) consists of two 1's, and row \( n \) is formed by taking row \( n-1 \) and inserting between each adjacent pair of numbers \( a \) and \( b \) their sum \( a + b \):

In row 2019 of the pattern, how many copies of 2019 will there be?

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