A065029 Numbers k such that the period of the continued fraction for sqrt(2)*k (A064848) is 2.

2, 3, 6, 10, 12, 17, 34, 35, 51, 58, 68, 70, 99, 102, 136, 198, 204, 338, 396, 408, 495, 577, 693, 990, 1154, 1189, 1386, 1731, 1970, 1980, 2308, 2378, 2772, 3363, 3462, 3465, 4616, 6726, 6895, 6924, 6930, 9232, 9809, 11482, 13452, 13790, 13848, 13860

Offset

1,1

Links

Chai Wah Wu, Table of n, a(n) for n = 1..390

Mathematica

Select[ Range[ 25000], Length[ Last[ ContinuedFraction[ Sqrt[2] *# ]]] == 2 & ]

Crossrefs

Cf. A064848, A064933.

Sequence in context: A140785 A355177 A038775 * A239212 A280558 A216920

Adjacent sequences: A065026 A065027 A065028 * A065030 A065031 A065032

Keyword

nonn

Author

Robert G. Wilson v, Nov 02 2001

Status

approved