demo - https://repl.it/repls/InfantileBonyFurseal

recursive pyramid

// logs this pattern
//         * 
//        * * 
//       *   * 
//      * * * * 
//     *       * 
//    * *     * * 
//   *   *   *   * 
//  * * * * * * * * 

let x = 1
let size = 8

for (let i = 0; i < size; i += 1) {
  console.log(' '.repeat(size - i) + x.toString(2).replace(/1/g, '* ').replace(/0/g, '  '))
  x ^= x * 2
}