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A003655
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Discriminants of real quadratic fields with narrow class number 1.
(Formerly M3782)
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1
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5, 8, 13, 17, 29, 37, 41, 53, 61, 73, 89, 97, 101, 109, 113, 137, 149, 157, 173, 181, 193, 197, 233, 241, 269, 277, 281, 293, 313, 317, 337, 349, 353, 373, 389, 397, 409, 421, 433, 449, 457, 461, 509, 521, 541, 557, 569, 593, 601, 613, 617, 641, 653, 661, 673
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Or, positive fundamental discriminants with form class number 1.
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REFERENCES
| D. A. Buell, Binary Quadratic Forms. Springer-Verlag, NY, 1989, pp. 224-241.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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CROSSREFS
| Sequence in context: A058240 A097268 A003653 * A082823 A143747 A101345
Adjacent sequences: A003652 A003653 A003654 * A003656 A003657 A003658
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com), Mira Bernstein
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EXTENSIONS
| Better definition from David Brink (brink(AT)math.ku.dk), Dec 30 2007, Jan 01 2008
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