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package pattern2;

import java.util.Scanner;

/*

for N = 4 print the pattern

1

2 3 2

3 4 5 4 3

4 5 6 7 6 5 4

*/

public class TriangleNumber {

public static void main(String[] args) {

Scanner s = new Scanner(System.in);

int n = s.nextInt();

int i = 1;

while (i <= n) {

int spaces = 1;

while (spaces <= n - i) {

System.out.print("\t");

spaces++;

}

int temp = i;

int j = 1;

while (j <= i) {

System.out.print(temp + "\t");

j++;

temp++;

}

temp--;

int k = 1;

while (k < i) {

temp--;

System.out.print(temp + "\t");

k++;

}

System.out.println();

i++;

}

}

}