#include <stdio.h>

int main() {
    int n;
    scanf("%d", &n);
    if (n <= 0 || n % 2 == 0) {
        printf("Invalid input");
        return 0;
    }
    int m = n / 2 + 1;
    for (int i = 1;i <= m; i++) {
        for (int j = 1; j <= i; j ++)
        printf("%d", j);
        for (int j = i - 1;j >= 1; j--) 
        printf("%d", j);
        printf("\n");
    }
    for (int i = m - 1; i >= 1; i--) {
    for (int j = 1; j <= i; j++)
    printf("%d", j);
    for (int j = i - 1; j >= 1; j--)
    printf("%d", j)
    printf("\n");
    }
    return 0;
}