2ndhexagonalnumber

<-- Enter hexagonal number statement
  

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Calculate hexagonal number 2

The formula for hexagonal number n is as follows
H_n = n(2n - 1)

Given n = 2, we have:
H_n = 2(2(2) - 1)
H_n = 2(4 - 1)
H_n = 2(3)
H₂ = 6

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