#include<stdio.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 right=size-1-j;
            int bottom=size-1-j;
            int min = top;
            int(left<min)min = left;
            int(right<min)min=right;
            int(bottom<min)min=bottom;
            printf("%d",n-min);
        }
        printf("\n");
    }
    return 0;
}