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%I M0066 #9 Jan 27 2014 08:57:35
%S 1,1,1,1,2,1,1,2,1,1,1,2,2,1,2,2,1,2,2,1,1,1,2,2,2,1,1,2,1,2,1,2,2,3,
%T 4,1,1,2,2,1,2,2,1,2,1,2,2,2,2,1,2,2,2,1,4,1,1,2,1,3,2,2,1,2,2,1,2,1,
%U 1,1,4,2,2,1,2,2,2,2,2,1,2,4,1,2,2,1,4,1,1,2,2,4,2,3,8,1,2,4,6,2,1,2,2,1,3
%N Class number of real quadratic field with discriminant 4n, n == 2,3 ( mod 4).
%D D. A. Buell, Binary Quadratic Forms. Springer-Verlag, NY, 1989, pp. 224-241.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%Y Cf. A003650.
%K nonn
%O 2,5
%A _N. J. A. Sloane_, _Mira Bernstein_
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