8thheptagonalnumber

<-- Enter heptagonal number statement
  

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Calculate heptagonal number 8

The formula for heptagonal number n is as follows

Hn  =	n(5n - 3)
	2

Given n = 8, we have:

H8  =	8(5(8) - 3)
	2

H8  =	8(40 - 3)
	2

H8  =	8(37)
	2

H8  =	296
	2

H₈ = 148

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