A031866 Period of continued fraction for sqrt(n) contains exactly 98 ones.

10399, 12076, 13654, 13711, 14029, 14221, 14551, 15094, 15541, 15646, 15829, 15919, 16249, 17356, 18934, 19069, 19204, 19489, 20518, 20773, 21529, 21841, 22174, 23041, 23713, 23761, 24241, 24364, 24646, 25341, 25969, 26203, 26797, 26836, 27201, 27868

Offset

1,1

Links

Table of n, a(n) for n=1..36.

Mathematica

cf98Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 1, Count[ ContinuedFraction[ s][[2]], 1]]==98]; Select[Range[30000], cf98Q] (* Harvey P. Dale, Jul 09 2015 *)

Crossrefs

Sequence in context: A289954 A263890 A279946 * A262800 A157445 A010082

Adjacent sequences: A031863 A031864 A031865 * A031867 A031868 A031869

Keyword

nonn

Author

David W. Wilson

Status

approved