Get the nth triangular number, or the triangular root of any number
npm install triangular-numbersFunctions to work with triangular numbers:
``javascript
import isTriangular from 'triangular-numbers/isTriangular'
console.log(isTriangular(3))
// > true
console.log(isTriangular(5))
// > false
`
`javascript
import getNthTriangularNumber from 'triangular-numbers/getNthTriangularNumber'
console.log(getNthTriangularNumber(1))
// > 1
console.log(getNthTriangularNumber(2))
// > 3
console.log(getNthTriangularNumber(3))
// > 6
console.log(getNthTriangularNumber(4))
// > 10
`
`javascript
import getTriangularRootIndex from 'triangular-numbers/getTriangularRootIndex'
console.log(getTriangularRootIndex(10))
// > 4
console.log(getTriangularRootIndex(11))
// > 4
console.log(getTriangularRootIndex(5))
// > 2
console.log(getTriangularRootIndex(4))
// > 2
console.log(getTriangularRootIndex(3))
// > 2
console.log(getTriangularRootIndex(2))
// > 1
`
`
yarn add triangular-numbers
MIT