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 A031705 Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 27. 1
 731, 2920, 6567, 11672, 18235, 26256, 35735, 46672, 59067, 72920, 88231, 105000, 123227, 142912, 164055, 186656, 210715, 236232, 263207, 291640, 321531, 352880, 385687, 419952, 455675, 492856, 531495, 552104, 571592, 594496, 613147, 656160 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Charles R Greathouse IV, Table of n, a(n) for n = 1..10000 MATHEMATICA lt27Q[n_]:=Module[{sr=Sqrt[n]}, If[IntegerQ[sr], False, Min[ ContinuedFraction[ sr][[2]]]==27]]; Select[Range[660000], lt27Q] (* Harvey P. Dale, May 11 2014 *) CROSSREFS Sequence in context: A085441 A098292 A031525 * A158396 A098263 A289571 Adjacent sequences:  A031702 A031703 A031704 * A031706 A031707 A031708 KEYWORD nonn AUTHOR STATUS approved

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Last modified May 18 18:42 EDT 2022. Contains 353824 sequences. (Running on oeis4.)