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A031826 Period of continued fraction for sqrt(n) contains exactly 58 ones. 0
4861, 5086, 5791, 6022, 6199, 7177, 7489, 7492, 7951, 8061, 9001, 9343, 9439, 9748, 9921, 10334, 10837, 11149, 11173, 11677, 12004, 12361, 12681, 12897, 13009, 13259, 13421, 13619, 13641, 13759, 13777, 14143, 14158, 14317, 14341, 14353, 14709, 14797 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..38.

MATHEMATICA

cf58Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Count[ContinuedFraction[s][[2]], 1]]==58]; Select[Range[15000], cf58Q] (* Harvey P. Dale, Mar 17 2015 *)

CROSSREFS

Sequence in context: A215949 A031838 A331664 * A243835 A124088 A244106

Adjacent sequences:  A031823 A031824 A031825 * A031827 A031828 A031829

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified February 27 03:50 EST 2020. Contains 332299 sequences. (Running on oeis4.)