import java.util.Scanner;
public class P4_17 {
public static void main(String[] args) {
System.out.println("输入一所需要三角形层数");
int a = new Scanner(System.in).nextInt();
for(int i=1; i<=a; i++) { //a是层数
for(int j=(a-i)*3-1; j>=0; j--) {
System.out.print(" "); }
for(int j=i; j>=1; j--) {
if(j<10)System.out.print(" ");
else System.out.print(" ");
System.out.print(j); }
for(int j=2; j<=i; j++) {
if(j<10)System.out.print(" ");
else System.out.print(" ");
System.out.print(j); }
System.out.println(""); }
}
}