System.out.print("enter base  ");
        base = scanner.nextInt();

        maxLength = (int)(Math.pow(base, 7));
        String len = "" + maxLength;
        maxLength = len.length();


        for (int i=1; i<=7;i++)
        {   result = (int)Math.pow(base,i);

            String aktuelleLen = "" + result;
            aktuelleLaenge = aktuelleLen.length();

            for(int j=0; j<= (maxLength - aktuelleLaenge);j++)
            {   System.out.print(" ");


            }

            System.out.println("\t" + result);
        }