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| Divisible by 7 (Posted on 2007-02-15) |
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Prove that if A = ½(15+√197), then 7 is a factor of [A^n] for all positive integer values of n, where [w] denotes the greatest integer less than or equal to w.
re(2):Look 4 the conjugate.... still open
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 | Comment 3 of 5 | 
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(In reply to re:Look 4 the conjugate by Dennis)
I ERRED.
NEED A HINT........
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