#include<stdio.h>
#include<stdlib.h>
int main() {
    int n, i, j, space, count =1, middle;
    printf("enter an odd integer for the number of rows: ");
    scanf("%d", &n);
    if (n % 2 == 0 || n < -15 || n> 15) {
        printf("Invalid Input\n");
        return 0;
    }
    int rows = n;
    middle = (rows + 1) / 2;
    for (i = 1; i <= middle; i++)
    {
        for (space = 1; space <= middle - i; space++){
            printf(" ");
        }
        for (j = 1; j <= 2*i-1; j++){
            printf("%d", j);
        }
        printf("\n");
    }
    for (i = middle -1; i >= 1; i--)
    for (space = 1; space <= 2 * i- 1; j++){
        printf("%d", j);
    }
    printf("\n");
    return 0;
}