Java'da sayı piramidi nasıl yazdırılır?

System.out.print("Number of rows--> ");
Scanner input = new Scanner(System.in);
int rows = input.nextInt();
int temp = rows, carp = 3;

for (int i = 1; i < rows + 1; i++) {
    for (int j = rows; j > i; j--) {
        System.out.printf("%" + (j + 1) + "s", " ");
    }
    System.out.printf("%" + i + "d", 1);
    if (i == 2){
        System.out.print(" ");
    }

    if (i > 1) {
        for (int j = 1; j < i; j++) {
            System.out.printf("%" + (i - 1) + "d", (int) Math.pow(carp, j));
        }
        if (i == 2) {
            System.out.print(" ");
        }
        for (int j = i - 1; j > 1; j--) {
            System.out.printf("%" + (i - 1) + "d", (int) Math.pow(carp, j) / 3);
        }
        System.out.printf("%" + (i - 1) + "d", 1);
    }

    temp--;
    System.out.println("");
}