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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A020349 Numbers k such that the continued fraction for sqrt(k) has period 10. 3
 43, 67, 86, 93, 115, 116, 118, 129, 154, 159, 161, 162, 186, 237, 242, 243, 245, 246, 259, 286, 292, 297, 339, 344, 345, 354, 375, 403, 411, 451, 452, 453, 459, 464, 465, 469, 475, 490, 494, 497, 515, 516, 522, 532, 534, 536, 543, 563, 583, 591, 594, 595, 598, 603, 616 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Harvey P. Dale, Table of n, a(n) for n = 1..1000 MATHEMATICA cf10Q[n_]:=Module[{sr=Sqrt[n]}, !IntegerQ[sr]&&Length[ ContinuedFraction[ sr][[2]]]==10]; Select[Range[700], cf10Q] (* Harvey P. Dale, Mar 07 2012 *) CROSSREFS Contains A237604. Sequence in context: A245742 A295702 A102269 * A050959 A273773 A139917 Adjacent sequences: A020346 A020347 A020348 * A020350 A020351 A020352 KEYWORD nonn AUTHOR 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.

Last modified March 31 18:54 EDT 2023. Contains 361672 sequences. (Running on oeis4.)