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A031794 Period of continued fraction for sqrt(n) contains exactly 26 ones. 0
886, 919, 1006, 1039, 1141, 1153, 1291, 1471, 1699, 1801, 1837, 1951, 2131, 2167, 2239, 2347, 2449, 2539, 2692, 2977, 3011, 3189, 3457, 3499, 3546, 3557, 3561, 3693, 3727, 3742, 3789, 3793, 3911, 3929, 3991, 4197, 4273, 4306, 4351, 4426, 4526, 4529 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..42.

MATHEMATICA

cf26Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Count[ContinuedFraction[s][[2]], 1]]==26]; Select[Range[4600], cf26Q] (* Harvey P. Dale, Aug 14 2018 *)

CROSSREFS

Sequence in context: A318200 A295443 A261760 * A020393 A103811 A190354

Adjacent sequences:  A031791 A031792 A031793 * A031795 A031796 A031797

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified October 14 12:02 EDT 2019. Contains 328004 sequences. (Running on oeis4.)