login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A031753 Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 75. 1
5627, 22504, 50631, 90008, 140635, 202512, 275639, 360016, 455643, 562520, 680647, 810024, 950651, 1102528, 1265655, 1440032, 1625659, 1822536, 2030663, 2250040, 2480667, 2722544, 2975671, 3240048, 3515675, 3802552, 4100679, 4410056, 4730683 (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

lt75Q[n_]:=Module[{s=Sqrt[n]}, If[IntegerQ[s], 0, Min[ContinuedFraction[s][[2]]]]==75]; Select[Range[5*10^6], lt75Q] (* Harvey P. Dale, Jan 30 2015 *)

CROSSREFS

Sequence in context: A203831 A014799 A031573 * A045128 A229591 A161193

Adjacent sequences:  A031750 A031751 A031752 * A031754 A031755 A031756

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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 28 03:29 EST 2021. Contains 349400 sequences. (Running on oeis4.)