PatternSixteen.java

import java.util.Scanner;

public class PatternSixteen{
    public static void main(String[] args) {
        Scanner scn = new Scanner(System.in);
        int n = scn.nextInt();
        int sp = 2 * n -3;
        int st = 1;
        
        for(int i = 1; i <= n; i++){
            int val = 1;
            for(int j = 1; j <= st; j++){
                System.out.print(val +"\t");
                val++;
            }

            for(int j = 1; j <= sp; j++){
                System.out.print("\t");
            }

            if(i == n){
                st--;
                val--;

            }
            for(int j = 1; j <= st; j++){
                val--;
                System.out.print(val + "\t");
            }

            st++;
            sp -= 2;
            System.out.println();
        }
    }
}