#include<stdio.h>
#include<stdio.h>
int main()
{
int n;
if(scan(%d,&N) != 1 ||N <= 0)
{
printf("invalid input\n");
return 0;
}
int total_rows = 2*N-1;
for(int i=0;i<total_rows;i++)
{
for(int j = 0; j < total_rows; j++)
{
int distance_i = abs(i -(N-1));
int distance_j = abs(j-(N - 1));
int num = N -(distance_i > distance_j ? distance_i : distance_j);
printf("%d",num);
}
printf("\n");
}

return 0;
}