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A031691 Least term in period of continued fraction for sqrt(n) is 13. 0
171, 680, 1527, 2712, 4235, 6096, 8295, 10832, 13707, 16920, 20471, 24360, 28587, 31003, 33152, 36127, 38055, 43296, 48875, 54792, 61047, 67640, 71330, 74571, 81840, 89447, 97392, 105675, 106326, 114296, 114973, 123255, 123958, 128219, 132552 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

MATHEMATICA

Select[Range[200000], !IntegerQ[Sqrt[#]]&&Min[ContinuedFraction[Sqrt[#]][[2]]]==13&] (* Vincenzo Librandi, Feb 06 2012 *)

CROSSREFS

Sequence in context: A185837 A016057 A043407 * A158220 A079654 A036518

Adjacent sequences:  A031688 A031689 A031690 * A031692 A031693 A031694

KEYWORD

nonn,changed

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified February 16 13:02 EST 2012. Contains 205909 sequences.