6thheptagonalnumber

<-- Enter heptagonal number statement
  

Calculate heptagonal number 6

The formula for heptagonal number n is as follows
Hn  =  n(5n - 3)
  2

Given n = 6, we have:
H6  =  6(5(6) - 3)
  2

H6  =  6(30 - 3)
  2

H6  =  6(27)
  2

H6  =  162
  2

H6 = 81