login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A031706 Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 28. 1
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 (list; graph; refs; listen; history; text; internal format)
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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 17 08:05 EDT 2022. Contains 353741 sequences. (Running on oeis4.)