int main() 
{
    int n;
    int absRow, absColumn;
    scanf("%d", &n);
    
    for(int row = n; row >= -n; row--)
    {
        if(row == 0 || row == -1)
        {
            continue;
        }
        for(int column = n; column >= -n; column--)
        {
            if(column == 0 || column == -1)
            {
                continue;
            }
            absRow = abs(row);
            absColumn = abs(column);
            if(absColumn <= absRow)
            {
                printf("%d ", absRow);
            }
            else
            {
                printf("%d ", absColumn);
            }
        }
        printf("\n");
    }
   
    return 0;
}