A031743 Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 65.

4227, 16904, 38031, 67608, 105635, 152112, 207039, 270416, 342243, 422520, 511247, 608424, 714051, 828128, 950655, 1081632, 1221059, 1368936, 1525263, 1690040, 1863267, 2044944, 2235071, 2433648, 2640675, 2856152, 3080079, 3312456, 3553283

Offset

1,1

Links

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

Mathematica

With[{nn=3600000}, Select[Complement[Range[nn], Range[Floor[Sqrt[nn]]]^2], Min[ContinuedFraction[Sqrt[#]][[2]]]==65&]] (* Harvey P. Dale, Oct 10 2011 *)

Crossrefs

Sequence in context: A202488 A167037 A031563 * A236725 A345580 A345837

Adjacent sequences: A031740 A031741 A031742 * A031744 A031745 A031746

Keyword

nonn

Author

David W. Wilson

Status

approved