%I A014599
%S A014599 1,1,1,2,1,3,1,3,2,4,1,5,2,4,3,4,1,7,2,5,3,6,2,8,2,5,3,8,2,10,2,5,5,
%T A014599 6,3,10,2,7,4,10,1,11,4,6,5,8,2,13,4,9,4,6,3,14,4,7,5,12,2,15,3,6,7,
%U A014599 12,4,13,2,11,4,12,3,14,4,8,8,10,3,19,4,10,4,12,3,18,6,7,5,12,4,19
%N A014599 Class numbers h(D) of imaginary quadratic fields with discriminant D=1-4*n.
%D A014599 H. Cohen, Course in Computational Alg. No. Theory, Springer, 1993, pp. 
               514-5.
%o A014599 (PARI) a(n) = qfbclassno(1-4*n)
%Y A014599 Sequence in context: A038569 A020650 A124224 this_sequence A075825 A007735 
               A002616
%Y A014599 Adjacent sequences: A014596 A014597 A014598 this_sequence A014600 A014601 
               A014602
%K A014599 nonn
%O A014599 1,4
%A A014599 Eric Rains (rains(AT)caltech.edu)