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A031705 Least term in period of continued fraction for sqrt(n) 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

David W. Wilson

STATUS

approved

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Last modified December 13 08:08 EST 2019. Contains 329968 sequences. (Running on oeis4.)