#include
     
      int main(){    int n,i,j,k,t,x,q,p;    while(scanf("%d",&n)!=EOF)    for(i=1;i<=n;i++)    {        for(j=1;j<=n-i;j++)        printf(" ");        for(k=1;k<=2*i-1;k++)        printf("%d",i);        printf("\n");    }    for(x=n+1;x<=2*n-1;x++)    {        for(p=1;p<=x-n;p++)        printf(" ");        for(q=2*n-2*p+1;q>=1;q--)        printf("%d",2*n-x);        printf("\n");    }    return 0;}