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%I M0084 #8 Jan 27 2014 08:57:35
%S 1,1,1,2,1,2,1,1,1,2,1,2,2,1,2,2,1,2,1,1,4,1,1,2,2,1,2,4,1,1,2,4,1,2,
%T 1,2,1,1,2,4,2,2,2,4,3,1,2,1,2,2,3,2,1,4,1,1,4,1,2,4,2,1,1,6,2,1,2,4,
%U 1,1,4,2,1,4,2,4,1,2,1,5,1,2,2,1,4,1,2,4,1,2,1,1,4,6,6,2,2,2,2,2,2,8,1,2,1
%N Class number of real quadratic forms with discriminant 4n+1.
%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. A003648.
%K nonn
%O 1,4
%A _N. J. A. Sloane_, _Mira Bernstein_
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