A031433 Least term in period of continued fraction for sqrt(n) is 9.

83, 328, 735, 1304, 2035, 2928, 3983, 5200, 6579, 7415, 8120, 9235, 9823, 11688, 13715, 15904, 17190, 18255, 20768, 23443, 23750, 26280, 26605, 29279, 29622, 31015, 32440, 35763, 39248, 42895, 45416, 46704, 48890, 50675, 54808, 59103

Offset

1,1

Links

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

Mathematica

Select[Range[60000], !IntegerQ[Sqrt[#]]&&Min[ContinuedFraction[Sqrt[#]][[2]]]==9&] (* Vincenzo Librandi, Jan 27 2012 *)

Crossrefs

Sequence in context: A334644 A288172 A341338 * A177099 A327850 A061525

Adjacent sequences: A031430 A031431 A031432 * A031434 A031435 A031436

Keyword

nonn

Author

David W. Wilson

Extensions

References based on the incorrect a(n)=81n^2+2n removed by R. J. Mathar, Nov 18 2010

Status

approved