I need an odd type of loop for C# console application

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C#

console

I am trying to find out the easiest to use loop for an assignment in school. We are using C# 2012 and I need it to on the same line output a number representing which day it is (integer for the day, just needs to be a number - 1, 2, 3, 4, etc going down the lines) and to the right of each day number I need it to put out a decimal/double that starts with 0.01 and doubles each day (so day 2 would need to say 2 and then 0.02 spaced out enough to have a header showing "Day:" and "Amount"). End result needs to print out something similar to the below -

Day Amount Owed
--- -----------
1 0.01
2 0.02
3 0.04

needs to calculate until day 64


I have the below code so far, but it gives me errors for the variable i.

Error 1 Use of unassigned local variable 'i' f:\documents\visual studio 2012\Projects\RichBeggarBC\RichBeggarBC\Program.cs 18 23 RichBeggarBC

Same error is given even if I remove the = 0.01 from the double i = 0.01;.

static void Main(string[] args)
        {
            //since the output will require a decimal, I am using a double as the variable type to grant more than 7 spaces
            double number;
            //used int for day
            int day = 1;
            double i = 0.01;

            Console.Write("Day:     Amount owed:\n");

            //for loop to run until number is made
            for (i = 0.01; day <= 64; i *= 2)
                Console.WriteLine (day);


            //console.readline used to sop program from finishing in order to allow it to remain open
            Console.ReadLine();
        }

I have also just tried a nested for loop and get errors when trying to use it.

for (int i =1; i <= 64; i++)
{
    for (double j = 0.01; j * 2)
    {
        Console.WriteLine (i);
    }
    Console.WriteLine ();
}

This gives me 2 errors. I get 1 error saying it expected a ; after the j * 2) and error 2 says cannot change double into bool and highlights j * 2). I just want to make it so each line prints i (and increment by 1) and then j after it so that it would read like in the table in the original post.