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A031854
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Period of continued fraction for sqrt(n) contains exactly 86 ones.
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0
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7606, 8269, 8941, 9619, 9811, 10021, 11251, 11404, 14629, 15261, 15292, 15649, 16894, 17047, 17497, 17659, 18313, 18789, 19156, 19387, 19582, 19606, 19837, 20092, 20509, 20641, 21553, 22303, 22521, 22567, 22609, 23251, 24121, 24406, 24686, 24913
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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cf86Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Count[ContinuedFraction[s][[2]], 1]] == 86]; Select[Range[25000], cf86Q] (* Harvey P. Dale, Aug 01 2022 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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