C :

#include<stdio.h>
int main()
{
	int i,j,t,k=0,x[20]={1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597,2584,4181,6765};
	while(scanf("%d",&i)==1)
	{
		t=0;printf("\n");
		while(t<=19)
		{
			for(j=1;j<=i;j++)
			{
				printf("%6d",x[t++]);
				if(t==20)break;
			}
			printf("\n");
		}
	}
}

C++ :

#include <bits/stdc++.h>
using namespace std;
int main()
{
	int n;
	int a[25]={1,1,2,3,5,8  ,  13  ,  21  ,  34,55,89 ,  144  , 233 ,  377 ,  610,987 , 1597 , 2584 , 4181 , 6765};
	while(~scanf("%d",&n)){
		printf("\n");
		for (int i=1;i<=20;i++){
			printf("%6d",a[i-1]);
			if (i%n==0&&i>=n){
				printf("\n");
			}
		}
      if (20%n!=0) printf("\n");
	}
	return 0;
}