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A031801 Period of continued fraction for sqrt(n) contains exactly 33 ones. 0
19519, 20191, 22987, 24839, 27511, 35551, 37211, 41251, 41347, 44511, 44536, 49187, 53519, 54071, 58847, 61795, 62263, 62291, 62879, 68579, 68632, 69751, 70555, 74227, 78883, 81171, 81279, 82575, 83707, 83752, 84527, 87163, 88303, 88479, 91015, 92407 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..36.

MATHEMATICA

cf33Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Count[ ContinuedFraction[ s][[2]], 1]]==33]; Select[Range[10^5], cf33Q] (* Harvey P. Dale, Sep 21 2018 *)

CROSSREFS

Sequence in context: A322101 A206274 A033869 * A022213 A093219 A184493

Adjacent sequences:  A031798 A031799 A031800 * A031802 A031803 A031804

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified May 22 15:54 EDT 2022. Contains 353957 sequences. (Running on oeis4.)