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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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1
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5, 6, 8, 9, 10, 12, 13, 15, 16, 18, 22, 25, 28, 37, 58
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| 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
| A subsequence of A000926.
Sequence in context: A205705 A201512 A057854 * A102408 A189719 A158698
Adjacent sequences: A033263 A033264 A033265 * A033267 A033268 A033269
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KEYWORD
| nonn,fini,full
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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