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A033268 Numbers n such that every genus of binary quadratic forms of discriminant -4n consists of a single class and the class number h(-4n) = 8. 1
105, 120, 165, 168, 210, 240, 273, 280, 312, 330, 345, 357, 385, 408, 462, 520, 760 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

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.

CROSSREFS

A subsequence of A000926.

Sequence in context: A039553 A135999 A162304 * A095643 A206265 A097217

Adjacent sequences:  A033265 A033266 A033267 * A033269 A033270 A033271

KEYWORD

nonn,fini,full

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified February 14 03:37 EST 2012. Contains 205570 sequences.