C :

#include<stdio.h>
int main()
{
	int n;
	scanf("%d",&n);
	int x;
	for(x=1;x<=n;x++){
		int y;
		for(y=1;y<=n-x;y++){
			printf(" ");
		}
		int z;
		for(z=1;z<=2*x-1;z++){
			printf("%d",x);
		}
		printf("\n");
	}
	return 0;
}

C++ :

#include<iostream>
using namespace std;

int main(){
	
	int n,k;
	cin>>n;
	k=1;
	for(int i=1;i<=n;i++){
		for(int j=1;j<=n-i;j++){
			cout<<" ";
		}
		for(int j=1;j<=2*i-1;j++){
			cout<<k;
		}
		k++;
		cout<<endl;
	}
}

Pascal :

var n,i,k:longint;
begin
  readln(n);
  for i:=1 to n do
  begin
     for k:=1 to i*2-1 do if k=1 then write(i:n-i+1) else write(i);
     writeln;
  end;
end.

Java :

import java.util.Scanner;
public class Main
{
    public static void main(String[] args)
    { Scanner s = new Scanner(System.in);
           int n = s.nextInt();
          
        for(int i = 1;i <= n;i ++)
        {
             for(int j = n - i;j >= 1;j --)
             {
                 System.out.print(" ");
             }
             for(int k = 1;k <= 2 * i - 1;k ++)
             {
                 System.out.print(i);
             }
                 System.out.println();
        }
             
    }
} 

Python :

#!/usr/bin/env python3
     
n = int(input())
m = 1
k = n-1
s = 1
for i in range(0,n,1):
     for j in range(0,k,1):
         print(" ",end="")
     for j in range(0,m,1):
         print(s,end="")
     print()
     m+=2
     k-=1
     s+=1