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A020427 Numbers n such that continued fraction for sqrt(n) has period 88. 0
1726, 2284, 2734, 2974, 3823, 4222, 5541, 5773, 5932, 6094, 6652, 6959, 7646, 7855, 7924, 8413, 8793, 8824, 9239, 9369, 9451, 9535, 9609, 10109, 10126, 10391, 11017, 11212, 11337, 11493, 11575, 11740, 11896, 12079, 12633, 12671, 12691, 12761, 12871 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..39.

MATHEMATICA

cf88Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Length[ ContinuedFraction[ s][[2]]]] == 88]; Select[Range[13000], cf88Q] (* Harvey P. Dale, Dec 07 2014 *)

CROSSREFS

Sequence in context: A035867 A271045 A031814 * A232299 A280841 A305474

Adjacent sequences:  A020424 A020425 A020426 * A020428 A020429 A020430

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified May 10 15:30 EDT 2021. Contains 343775 sequences. (Running on oeis4.)