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A051992 Discriminants of real quadratic fields of ERD-type with class groups of exponent 2 and discriminants of the form D = r^2*k^2+4k, k odd. 9
85, 165, 205, 221, 285, 357, 365, 429, 533, 629, 645, 741, 957, 965, 1085, 1205, 1245, 1365, 1469, 1517, 1533, 1685, 1853, 1965, 2013, 2037, 2045, 2085, 2373, 2397, 2405, 2613, 2805, 2813, 3005, 3045, 3237, 3485, 3885, 3965, 4245, 4277 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Excludes discriminants appearing in A051990.
REFERENCES
R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A, Table A4(3), column D.
LINKS
CROSSREFS
Sequence in context: A043761 A043770 A329490 * A044255 A044636 A089060
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Jan 04 2000
STATUS
approved

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Last modified June 16 07:19 EDT 2024. Contains 373423 sequences. (Running on oeis4.)