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A031725 Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 47. 1
2211, 8840, 19887, 35352, 55235, 79536, 108255, 141392, 178947, 220920, 267311, 318120, 373347, 432992, 497055, 565536, 638435, 715752, 797487, 883640, 974211, 1069200, 1168607, 1272432, 1380675, 1493336, 1610415, 1731912, 1857827, 1988160 (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

lt47Q[n_]:=Module[{s=Sqrt[n]}, !IntegerQ[s]&&Min[ContinuedFraction[s][[2]]]==47]; Select[Range[2000000], lt47Q] (* Harvey P. Dale, Sep 12 2014 *)

CROSSREFS

Sequence in context: A031545 A191679 A238456 * A077693 A253735 A259892

Adjacent sequences:  A031722 A031723 A031724 * A031726 A031727 A031728

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified December 5 20:39 EST 2021. Contains 349558 sequences. (Running on oeis4.)