Free Heptagonal Number Calculator - This calculator determines the nth heptagonal number

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- formula
- a fact or a rule written with mathematical symbols. A concise way of expressing information symbolically.
- heptagon
- seven sided figure
- heptagonal number
- number
- an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.