%I #6 Feb 19 2019 04:45:46
%S 1,1,1,1,1,1,1,1,1,5,5,5,3,1,1,3,3,1,1,1,1,1,1,1,1,1,1,1,1,7,1,1,1,1,
%T 1,1,1,1,1,1,1,1,1,5,1,1,1,1,9,1,1,3,3,3,3
%N Class numbers associated with entries of A001992.
%H Michael John Jacobson, <a href="http://hdl.handle.net/1993/18862">Computational techniques in quadratic fields</a>, Doctor of Science in Computer Science Thesis, University of Manitoba, 1995, 147 pages.
%H Michael John Jacobson Jr. and Hugh C. Williams, <a href="https://doi.org/10.1090/S0025-5718-02-01418-7">New quadratic polynomials with high densities of prime values</a>, Math. Comp. 72 (2003), 499-519
%H D. H. Lehmer, E. Lehmer and D. Shanks, <a href="https://doi.org/10.1090/S0025-5718-1970-0271006-X">Integer sequences having prescribed quadratic character</a>, Math. Comp., 24 (1970), 433-451.
%Y Cf. A001992.
%K nonn,more
%O 1,10
%A _N. J. A. Sloane_, Jun 14 2004