import java.util.Scanner;
public class NumericPalindrom {
public static void main(String args[]) {
Scanner sc = new Scanner(System.in);
System.out.println("Enter the no of rows");
int n = sc.nextInt();
for (int i = 1; i <= n; i++) {
for (int j = 1; j <= n - i; j++) {
System.out.print(" ");
}
for (int j = i; j >= 1; j--) {
System.out.print(j);
}
for (int j = 2; j <= i; j++) {
System.out.print(j);
}
System.out.println();
}
}
}
