

A051995


Consider real quadratic fields of ERDtype with class groups of exponent 2 and discriminants of the form D = r^2*k^2+4k, k odd; sequence gives values of r.


8



9, 1, 3, 1, 1, 1, 19, 7, 23, 25, 5, 9, 1, 31, 1, 7, 7, 1, 3, 1, 13, 41, 43, 3, 15, 15, 9, 3, 7, 1, 49, 17, 1, 53, 11, 11, 19, 59, 3, 1, 13, 4, 1, 23, 5, 15, 7, 11, 27, 5, 5, 1, 3, 1, 7, 1, 19, 3, 101, 7, 3, 3, 11, 25, 127, 43, 7, 27, 13, 29, 3, 31, 3, 1, 25, 59, 179, 9, 7, 47, 13
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OFFSET

1,1


COMMENTS

Excludes discriminants appearing in A051990.


REFERENCES

R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A, Table A4(3), column r.


LINKS



CROSSREFS



KEYWORD

nonn,fini,full


AUTHOR



EXTENSIONS



STATUS

approved



