%I M0077 #17 Apr 14 2019 10:42:26
%S 1,1,2,1,1,2,2,2,1,2,1,2,1,2,1,2,2,4,1,2,2,1,2,2,2,2,1,2,2,1,1,2,4,1,
%T 1,4,2,2,2,4,1,4,2,4,1,2,4,1,2,4,4,2,1,2,1,2,2,2,1,1,2,4,4,2,2,2,4,4,
%U 3,2,1,2,2,1,2,2,2,3,4,2,2,1,4,1,4,1,2,4,1,2,2,4,2,4,1,6,1,6,4,2,2,1,2,2,4
%N Class number of binary quadratic forms with fundamental discriminant A003658(n),n>=2.
%D D. A. Buell, Binary Quadratic Forms. Springer-Verlag, NY, 1989, pp. 236, 241.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H S. R. Finch, <a href="http://www.people.fas.harvard.edu/~sfinch/">Class number theory</a>
%H Steven R. Finch, <a href="/A000924/a000924.pdf">Class number theory</a> [Cached copy, with permission of the author]
%H Wolfdieter Lang, <a href="/A003646/a003646.pdf">Table for a(n), n=2, ..., 92 (see Part 2).</a>
%Y Cf. A087048, A079896.
%K nonn
%O 2,3
%A _N. J. A. Sloane_, _Mira Bernstein_