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A031593 Numbers n such that continued fraction for sqrt(n) has even period and central term 95. 0
9027, 9043, 9059, 9067, 9071, 9079, 9091, 9103, 9123, 9127, 9151, 9167, 9171, 9179, 9187, 9199, 9203, 9223, 9227, 9239, 9247, 9267, 9283, 9291, 9299, 9307, 9311, 9319, 9323, 9339, 9343, 9359, 9363, 9371, 9391, 9403, 9407, 36104, 36128, 36136, 36160 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..41.

MATHEMATICA

ep95Q[n_]:=Module[{s=Sqrt[n], cf, len}, cf=If[IntegerQ[s], {1}, ContinuedFraction[ s][[2]]]; len=Length[cf]; EvenQ[len]&&cf[[len/2]] == 95]; Select[Range[40000], ep95Q] (* Harvey P. Dale, Feb 24 2018 *)

CROSSREFS

Sequence in context: A252456 A196994 A250828 * A031773 A128374 A210179

Adjacent sequences:  A031590 A031591 A031592 * A031594 A031595 A031596

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified April 7 00:55 EDT 2020. Contains 333291 sequences. (Running on oeis4.)