Discriminants of imaginary quadratic fields with class number 18 (negated).

Terms

a(0) =335a(1) =519a(2) =527a(3) =679a(4) =1135a(5) =1172a(6) =1207a(7) =1383a(8) =1448a(9) =1687a(10) =1691a(11) =1927a(12) =2047a(13) =2051a(14) =2167a(15) =2228a(16) =2291a(17) =2315a(18) =2344a(19) =2644a(20) =2747a(21) =2859a(22) =3035a(23) =3107a(24) =3543a(25) =3544a(26) =3651a(27) =3688a(28) =4072a(29) =4299