include

include

include

include

int min(int i, int j, int k, int x){ int minimum = i;

if(j < minimum){
    minimum = j;
} 
if(k < minimum){
    minimum = k;
} 
if(x < minimum){
    minimum = x;
} 

return minimum;

}

int main() {

int n, distance, value;
scanf("%d", &n);
// Complete the code to print the pattern.
int size = 2 * n - 1;
for(int i = 0; i < size; i++){
    for(int j = 0; j < size ; j++){
        distance = min(i, j, size - i - 1, size - j - 1);
        value = n - distance;
        printf("%d ", value);
    }
    printf("\n");
}

return 0;

}