

A192322


Negated discriminants of imaginary quadratic number fields whose class group is isomorphic to the Klein 4group, C2 x C2.


4



84, 120, 132, 168, 195, 228, 280, 312, 340, 372, 408, 435, 483, 520, 532, 555, 595, 627, 708, 715, 760, 795, 1012, 1435
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OFFSET

1,1


COMMENTS

Added keyword "full"  This sequence is a subsequence of A013658, whose last term is 1555. I have verified that the terms above are complete and correct.  Rick L. Shepherd, May 06 2013


LINKS



PROG

(PARI) ok(n)={isfundamental(n) && [2, 2] == quadclassunit(n).cyc} \\ Andrew Howroyd, Jul 20 2018


CROSSREFS



KEYWORD

nonn,fini,full


AUTHOR



STATUS

approved



