2ndhexagonalnumber

<-- Enter hexagonal number statement
  

Calculate hexagonal number 2

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

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