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URL: https://oeis.org/A031689

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A031689
Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 11.
1
123, 488, 1095, 1944, 3035, 4368, 5943, 7760, 9819, 12120, 14663, 16152, 17448, 19344, 20475, 23744, 27255, 31008, 35003, 37284, 39240, 43719, 48440, 53403, 53866, 58608, 59093, 64055, 64562, 67128, 69744, 75675, 81848, 88263, 94920, 101819
OFFSET
1,1
LINKS
Charles R Greathouse IV, Table of n, a(n) for n = 1..10000
MATHEMATICA
Select[Range[110000], !IntegerQ[Sqrt[#]]&&Min[ContinuedFraction[Sqrt[#]][[2]]]==11&] (* Vincenzo Librandi, Jan 27 2012 *)
CROSSREFS
Cf. A031424.
Sequence in context: A179612 A091331 A248556 * A181679 A193251 A074303
KEYWORD
nonn
EXTENSIONS
Content that was based on the incorrect assumption that a(n)=121*n^2+2*n removed by R. J. Mathar, Nov 18 2010
STATUS
approved