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%I #9 Sep 21 2021 15:46:08
%S 34,51,66,87,102,119,123,138,146,194,215,231,258,287,318,330,390,402,
%T 410,435,447,455,482,527,570,615,623,627,635,678,770,782,798,843,890,
%U 902,1022,1095,1235,1298,1302,1515,1547,1610,1770,1938,1995
%N Discriminants of real quadratic fields of ERD-type with class groups of exponent 2 and discriminants of the form D = r^2*k^2+2k, k odd.
%C Excludes discriminants appearing in A051990.
%D R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A, Table A4(2), column D.
%H Georg Fischer, <a href="/A051991/b051991.txt">Table of n, a(n) for n = 1..76</a>
%Y Cf. A051990, A051992, A051993, A051994, A051995, A051996, A051997, A051998.
%K nonn,fini,full
%O 1,1
%A _N. J. A. Sloane_, Jan 04 2000
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