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A003814
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Numbers n such that continued fraction for sqrt(n) has odd period length (values of n).
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10
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2, 5, 10, 13, 17, 26, 29, 37, 41, 50, 53, 58, 61, 65, 73, 74, 82, 85, 89, 97, 101, 106, 109, 113, 122, 125, 130, 137, 145, 149, 157, 170, 173, 181, 185, 193, 197, 202, 218, 226, 229, 233, 241, 250, 257, 265, 269, 274, 277, 281
(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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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
S. R. Finch, Class number theory
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CROSSREFS
| Cf. A010333, A003654.
Cf. A031396.
Sequence in context: A008784 A020893 A145017 * A031396 A003654 A047617
Adjacent sequences: A003811 A003812 A003813 * A003815 A003816 A003817
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Walter Gilbert
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