public class kettofhatvany {
  public void prog( String args[] ) {
    int n,x;
    x = 1;
    for( n = 0; n <= 16 ; n = n + 1 ) {
      System.out.println( "2^"+n+"="+x );
      x = x * 2;
    }
  }

  public static void main( String args[] ) {
    kettofhatvany e = new kettofhatvany();
    e.prog( args );
  }
}