A020361 Numbers k such that the continued fraction for sqrt(k) has period 22.

166, 253, 466, 489, 491, 517, 523, 596, 597, 637, 643, 662, 664, 763, 771, 834, 893, 931, 932, 947, 971, 1059, 1187, 1194, 1204, 1266, 1334, 1375, 1412, 1427, 1457, 1558, 1563, 1566, 1571, 1667, 1734, 1749, 1798, 1835, 1843, 1963, 1972, 1986, 2001, 2068, 2082

Offset

1,1

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000 (terms 1..1000 from Harvey P. Dale)

Mathematica

With[{nn=2100}, Select[Complement[Range[nn], Range[Floor[Sqrt[nn]]]^2], Length[ContinuedFraction[Sqrt[#]][[2]]]==22&]] (* Harvey P. Dale, Feb 02 2012 *)

Crossrefs

Sequence in context: A261261 A261288 A038007 * A256643 A250735 A105987

Adjacent sequences: A020358 A020359 A020360 * A020362 A020363 A020364

Keyword

nonn

Author

David W. Wilson

Status

approved