How to right-align the printing of Floyd's triangle power of 2

HydrogenUranium :

How do I shift to left in last 2 row in my output Floyd's triangle ? Here is my output:

Expected output:

Here is my code :

 for(int i=0; i<=5; ++i) {

         //total of space
        int n=6-i;

         //print space
         while(n>0) {
             System.out.print(" ");
             n--;
         }

         //print number
         for(int j=i; j>=0; j--) {
             System.out.print((int)Math.pow(2, j));
         }

         System.out.println(" ");

     }

Thank you

fedup :

    int lineLength = 8;

    for (int i = 0; i <= 5; ++i) {

        //print number
        StringBuilder sb = new StringBuilder();
        for (int j = i; j >= 0; j--) {
            sb.append((int) Math.pow(2, j));
        }

        //print space
        for (int spaces = lineLength - sb.length(); spaces > 0; spaces--) {
            System.out.print(" ");
        }
        System.out.println(sb.toString());
    }

And a more generic example:

public static void main(String[] args) {

    int numbersToCompute = 10;
    int lineLength = floydsNumber(numbersToCompute).length();
    for (int i = 0; i <= numbersToCompute; ++i) {
        String floydsNumber = floydsNumber(i);
        for (int spaces = lineLength - floydsNumber.length(); spaces > 0; spaces--) {
            System.out.print(" ");
        }
        System.out.println(floydsNumber.toString());
    }
}

private static String floydsNumber(int i) {
    StringBuilder sb = new StringBuilder();
    for (int j = i; j >= 0; j--) {
        sb.append((int) Math.pow(2, j));
    }
    return sb.toString();
}