SP1026 FAVDICE - Favorite Dice

BuggyD loves to carry his favorite die around. Perhaps you wonder why it's his favorite? Well, his die is magical and can be transformed into an N-sided unbiased die with the push of a button. Now BuggyD wants to learn more about his die, so he raises a question: What is the expected number of throws of his die while it has **N** sides so that each number is rolled at least once?

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