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A124605 Position of the first 5 in the decimal expansion of the square root of n, or -1 if 5 never appears. +0
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-1, -1, 8, 6, -1, 37, 31, 4, 36, -1, 26, 12, 10, 4, 6, 19, -1, 7, 16, 3, 7, 2, 7, 4, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, -1, 8, 18, 19, 5, 38, 22, 2, 8, 23, 13, 3, 13, -1, 13, 11, 8, 14, 14, 13, 11, 2, 4, 7, 4, 10, 22, 6, -1, 6, 13, 4, 9, 18, 10, 15, 4, 2, 7, 6, 45, 35, 18, 13, 15, -1, 3, 8, 4, 5, 10, 9, 8, 12, 11, 2, 2, 6, 4, 39, 6, 6, 16, 17, -1 (list; graph; listen)
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Last modified December 8 08:31 EST 2009. Contains 170430 sequences.


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