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A013649
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Period of continued fraction for sqrt(n) contains exactly two 1's.
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0
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14, 19, 22, 23, 29, 33, 34, 45, 47, 52, 53, 54, 59, 60, 62, 69, 70, 71, 77, 78, 79, 85, 95, 96, 98, 107, 114, 117, 118, 119, 125, 127, 138, 140, 141, 142, 149, 153, 154, 164, 165, 167, 173, 178, 187, 188, 189, 192, 194, 202, 205, 206, 216, 218, 219, 220, 221, 222, 223, 229
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| Kenneth H. Rosen, Elementary Number Theory and Its Applications, Addison-Wesley, 1984, page 426 (but beware of errors!).
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MATHEMATICA
| Select[ Range@ 1900, !IntegerQ[ Sqrt@ #] && Count[ ContinuedFraction[ Sqrt@ #][[2]], 1] == 2 &] (* Robert G. Wilson v, Jul 03 2011 *)
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CROSSREFS
| Sequence in context: A065343 A165228 A205866 * A013657 A013653 A072124
Adjacent sequences: A013646 A013647 A013648 * A013650 A013651 A013652
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KEYWORD
| nonn
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AUTHOR
| Clark Kimberling (ck6(AT)evansville.edu)
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