JavaScript/Maths/HexagonalNumber.js at master · MMABSOUT/JavaScript · GitHub

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* Author: Akshay Dubey (https://github.com/itsAkshayDubey)

* Hexagonal Number: https://en.wikipedia.org/wiki/Hexagonal_number

* The nth hexagonal number hn is the number of distinct dots in a pattern of dots

* consisting of the outlines of regular hexagons with sides up to n dots, when the

* hexagons are overlaid so that they share one vertex.

/**

* @function hexagonalNumber

* @description -> returns nth hexagonal number

* @param {Integer} number

* @returns {Integer} nth hexagonal number

export const hexagonalNumber = (number) => {

if (number <= 0) {

throw new Error('Number must be greater than zero.')

}

return number * (2 * number - 1)

}

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