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%I
%S 4,9,16,18,20,25,27,32,36,45,48,49,50,52,54,63,64,68,72,75,80,81,84,
%T 90,96,98,99,100,108,112,116,117,121,125,126,128,132,135,144,147,148,
%U 150,153,160,162,164,169,171,175,176,180,189,192,196,198,200,207,208,212
%N Numbers n such that the discriminant of the quadratic field Q(sqrt(n) ) < n.
%C Among terms are all the squares for which discriminant = 1
%F a(n) appears to be asymptotic to C*n with C=3.4.....
%Y Cf. A037449.
%K easy,nonn
%O 1,1
%A _Benoit Cloitre_, Aug 10 2002
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