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A031597 Numbers n such that continued fraction for sqrt(n) has even period and central term 99. +0
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9803, 9811, 9839, 9843, 9851, 9859, 9871, 9883, 9887, 9899, 9907, 9923, 9931, 9959, 9963, 9967, 9987, 9991, 10007, 10019, 10031, 10039, 10067, 10079, 10083, 10091, 10099, 10103, 10107, 10111, 10131, 10139, 10147, 10151, 10159, 10163, 10199, 39208 (list; graph; listen)
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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.


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