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A065030 Numbers k such that the period of the continued fraction for sqrt(5)*k is 2. 1
2, 4, 9, 18, 34, 36, 68, 72, 161, 322, 323, 483, 610, 644, 646, 966, 1220, 1288, 1292, 1449, 1932, 2576, 2889, 2898, 3355, 3864, 5778, 5796, 6710, 7728, 9455, 10946, 11556, 11592, 13420, 18910, 21892, 23112, 23184, 37820, 49113, 51841, 54891, 98226, 103682 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[ Range[ 25000], Length[ Last[ ContinuedFraction[ Sqrt[5] *# ]]] == 2 & ]
CROSSREFS
Cf. A064933.
Sequence in context: A034685 A046683 A065055 * A103321 A138196 A298404
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Nov 02 2001
EXTENSIONS
More terms from Chai Wah Wu, Feb 10 2022
STATUS
approved

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Last modified April 22 00:17 EDT 2024. Contains 371886 sequences. (Running on oeis4.)