Fibrous Numbers

fibrous.js

let n = 100;

// 0, 1, 1, 2, 3, 5, 8, 13 until 100, 144

let number1 = 0;
let number2 = 1;
let sum = 1;

while(number1 <= n) {

    console.log(number1);

    sum = number1 + number2;
    number1 = number2;
    number2 = sum;
}