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Search: id:A033266
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| A033266 |
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Numbers n such that every genus of binary quadratic forms of discriminant -4n consists of a single class, and the class number h(-4n) = 2. |
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+0
2
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| 5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 22, 25, 28, 37, 58
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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D. Cox, "Primes of Form x^2 + n y^2", Wiley, 1989, p. 60.
G. B. Mathews, Theory of Numbers, Chelsea, no date, p. 263.
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CROSSREFS
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A subsequence of A000926.
Adjacent sequences: A033263 A033264 A033265 this_sequence A033267 A033268 A033269
Sequence in context: A105738 A099149 A057854 this_sequence A102408 A120174 A047439
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KEYWORD
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nonn,fini,full
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AUTHOR
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njas
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