5^n mod 11. 1, 5, 3, 4, 9, 1, 5, 3, 4, 9, 1, 5, 3, 4, 9, 1, 5, 3, 4, 9, 1, 5, 3, 4, 9, 1, 5, 3, 4, 9, 1, 5, 3, 4
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