A031706 Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 28.

197, 786, 1767, 3140, 4905, 7062, 9611, 12552, 15885, 19610, 23727, 28236, 33137, 38430, 44115, 50192, 56661, 63522, 70775, 78420, 86457, 94886, 103707, 112920, 122525, 132522, 142911, 153692, 164865, 176430, 177270, 188387, 200736, 213477

Offset

1,1

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Mathematica

Select[Range[250000], !IntegerQ[Sqrt[#]] && Min[ContinuedFraction[Sqrt[#]][[2]]] == 28&] (* Vincenzo Librandi, Jan 27 2012 *)

Crossrefs

Sequence in context: A142812 A347225 A204844 * A201256 A231462 A188361

Adjacent sequences: A031703 A031704 A031705 * A031707 A031708 A031709

Keyword

nonn

Author

David W. Wilson

Status

approved