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A031738 Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 60. 1
901, 3602, 8103, 14404, 22505, 32406, 44107, 57608, 72909, 90010, 108911, 129612, 152113, 176414, 202515, 230416, 260117, 291618, 324919, 360020, 396921, 435622, 476123, 518424, 562525, 608426, 656127, 705628, 756929, 810030, 864931, 921632 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) = 900n^2 + n for n < 63, but a(63) = 3463382. - Charles R Greathouse IV, Aug 04 2017

LINKS

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

MATHEMATICA

upto=930000; With[{c=Complement[Range[upto], Range[Floor[Sqrt[ upto]]]^2]}, Select[ c, Min[ ContinuedFraction[Sqrt[#]][[2]]]==60&]] (* Harvey P. Dale, May 19 2012 *)

CROSSREFS

Sequence in context: A252674 A158407 A250782 * A268585 A224611 A345537

Adjacent sequences: A031735 A031736 A031737 * A031739 A031740 A031741

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified February 1 03:56 EST 2023. Contains 359981 sequences. (Running on oeis4.)