%I #25 Oct 11 2017 09:07:56
%S 3,4,7,8,11,15,19,20,24,35,40,43,51,52,67,88,91,115,123,148,163,187,
%T 232,267,403,427
%N Values of fundamental discriminant -d where number of ideal classes Q(sqrt(-d)) is at most two.
%C Equals A014602 union A014603. - _Michel Marcus_, Nov 02 2013
%H A. Schinzel, <a href="http://journals.impan.gov.pl/ba/Inf/59-2-2.html">Solution to a Problem of Lubelski and an Improvement of a Theorem of His</a>, Bull. Pol. Acad. Sci. Math. Vol. 59 No 2 2011 pp. 115-119.
%H H. M. Stark, <a href="http://www.jstor.org/stable/2005481">On complex quadratic fields with class number two</a>, Math. Comp. 29, 1975, pp. 289-302.
%K nonn,fini,full
%O 1,1
%A _Artur Jasinski_, Oct 07 2011