text: const { solution, defaultInput } = require('./');
  
  test('Provided test cases', () => {
      expect(solution('2')).toBe(512);
      expect(solution('10')).toBe(614656);
  });
  
  test('Custom test cases', () => {
  
  });
  
  test('Problem input', () => {
      expect(solution(defaultInput)).toBe(248155780267521);
  });
  