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A064933
Numbers k such that the period of the continued fraction for sqrt(3)*k is 2.
3
1, 2, 3, 4, 7, 11, 14, 15, 26, 28, 41, 52, 56, 78, 97, 130, 153, 156, 194, 209, 260, 362, 388, 390, 571, 679, 724, 765, 776, 780, 1351, 1358, 1552, 2131, 2702, 2716, 2911, 3982, 4053, 5042, 5404, 5432, 6755, 6878, 7953, 7964, 8106, 8109, 10084, 10808
OFFSET
1,2
REFERENCES
R. K. Guy, personal communication.
LINKS
MATHEMATICA
Select[Range[1024], Length[Last[ContinuedFraction[Sqrt[3]*# ]]]==2& ]
Select[ Range[20000], Length[ Last[ ContinuedFraction[ Sqrt[3]*# ]]] ==2 & ]
CROSSREFS
Sequence in context: A279071 A171027 A348792 * A060731 A238492 A140827
KEYWORD
nonn
AUTHOR
Wouter Meeussen, Oct 26 2001
EXTENSIONS
More terms from Robert G. Wilson v, Oct 31 2001
STATUS
approved