%I #12 Mar 05 2020 02:28:50
%S 1,-1,1,2,-1,1,1,2,3,-2,1,2,-1,1,2,4,-1,3,1,2,1,1,1,2,5,-2,3,2,-1,2,1,
%T 4,1,2,2,6,-1,1,2,2,-1,2,1,2,3,1,1,4,7,5,2,2,-1,3,2,2,1,-2,1,2,-1,1,3,
%U 8,-2,2,1,2,1,2,1,6,-1,-2,5,2,1,2,3,4,9,-4,1,2,-2,1,2,2,-1,3,2,2,1,1,2,4,-1,7,3,10
%N Class number of maximal order in real quadratic field of radicand n.
%C Mollin gives a table for n < 10000.
%D R. A. Mollin, Quadratics, CRC Press, 1996, Table C1.
%K sign,easy,nice
%O 1,4
%A _R. K. Guy_, _N. J. A. Sloane_