#include<stdio.h>
#include<stdlib.h>
int main (){
    int n;
    scanf("%d",&n);
    if(n<0)
    printf("Invalid Input");
    return 0;
}
int size=2*n-1;
for (int i=0;i<size;i++) {
    for(int j=0;j<size;j++) {
        int top=i;
        int left=j;
        int bottom=size-1-i;
        int right=size-1-j;
        
        int min=top;
        if(left<min)min=left;
        if(bottom<min)min=bottom;
        if(right<min)min=right;
        printf("%d",n-min);
    }
    printf("\n");
}
return 0;
}