
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
What number is directly above $426$ in this triangular array of numbers?
\[\begin{array}{cccccc}
& & & 1 & &\\ 
& & 4 & 5 & 6 &\\ 
& 7 & 8 & 9 & 10 & 11\\ 
12 & 13 & 14 & 15 & 16 & 17 & 18\\ 
\end{array}\]
Assume the pattern continues indefinitely, where each row starts with three elements and each subsequent row adds three more elements than the previous row.
A) 365
B) 370
C) 375
D) 378
E) 380

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