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 A031779 Period of continued fraction for sqrt(n) contains exactly 11 ones. 1
 1075, 1675, 2183, 2623, 2783, 2871, 3075, 3224, 3256, 3551, 3915, 4675, 5656, 6808, 6815, 7599, 7663, 7987, 8299, 8399, 8695, 8995, 9271, 10672, 10855, 11395, 11403, 11919, 12728, 13407, 14608, 14672, 15023, 15568, 15640, 15768, 16119, 16856, 17043 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Table of n, a(n) for n=1..39. MATHEMATICA oQ[n_]:=Module[{sqn=Sqrt[n]}, !IntegerQ[sqn]&&Count[ ContinuedFraction[ sqn][[2]], 1]==11]; Select[Range[20000], oQ] (* Harvey P. Dale, Nov 10 2011 *) CROSSREFS Sequence in context: A250636 A329148 A014364 * A336781 A237213 A235959 Adjacent sequences: A031776 A031777 A031778 * A031780 A031781 A031782 KEYWORD nonn AUTHOR David W. Wilson STATUS approved

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Last modified April 18 13:29 EDT 2024. Contains 371780 sequences. (Running on oeis4.)