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A051980
Discriminants of real quadratic fields with class number 2 and related continued fraction period length of 15.
0
481, 1417, 1466, 2858, 3065, 3589, 3785, 3977, 4538, 5317, 5941, 6641, 6749, 7082, 11861, 12701, 12833, 13793, 14909, 16589, 17153, 18185, 18365, 18581, 20885, 24221, 27989, 29069, 32885, 33365, 44813, 47165, 51173, 66197, 67973, 70493, 78917
OFFSET
1,1
REFERENCES
R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A, Table A3.
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
N. J. A. Sloane, Jan 04 2000
EXTENSIONS
a(16)=24221 and a(37) inserted by Georg Fischer, Sep 21 2021
STATUS
approved