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 A329182 Negative discriminants with form class group isomorphic to C_2 X C_2 (negated). 2
 84, 96, 120, 132, 160, 168, 180, 192, 195, 228, 240, 280, 288, 312, 315, 340, 352, 372, 408, 435, 448, 483, 520, 532, 555, 595, 627, 708, 715, 760, 795, 928, 1012, 1435 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This sequence is finite and this is the full list. LINKS Rick L. Shepherd, Binary quadratic forms and genus theory, Master of Arts Thesis, University of North Carolina at Greensboro, 2013 PROG (PARI) isA329182(d) = (d>0) && quadclassunit(-d)[2]==[2, 2] CROSSREFS Cf. A014602 (negative discriminants with form class group isomorphic to the trivial group), A133675 (isomorphic to C_2), A328825 (isomorphic to C_3), this sequence (isomorphic to C_2 X C_2), A330219 (isomorphic to C_4). The fundamental terms are listed in A192322. Cf. also A013658. Sequence in context: A045569 A219183 A289218 * A113931 A214866 A111313 Adjacent sequences:  A329179 A329180 A329181 * A329183 A329184 A329185 KEYWORD nonn,fini,full AUTHOR Jianing Song, Dec 05 2019 STATUS approved

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Last modified September 29 20:22 EDT 2020. Contains 337432 sequences. (Running on oeis4.)