6thheptagonalnumber

<-- Enter heptagonal number statement
  

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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

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