A218159 Fundamental discriminants of real quadratic number fields with class number 9.

1129, 3137, 4409, 5521, 6616, 6809, 7573, 7873, 10273, 10721, 11641, 12409, 12657, 13069, 14876, 15629, 16321, 17273, 17989, 18136, 18633, 19441, 21781, 22492, 22497, 23512, 24029, 24169, 24697, 24781, 25361, 26573, 27221, 27349, 28901, 29317, 31897

Offset: 1

Author

Arkadiusz Wesolowski, Oct 22 2012

Keywords

• nonn

Links

• Eric Weisstein's World of Mathematics, Class Number
• Index entries for sequences related to quadratic fields

Crossrefs

Cf. A003656, A094619, A094612-A094614, A218156-A218158, A218160.

Programs

Mathematica

Select[Range[31897], NumberFieldDiscriminant@Sqrt[#] == # && NumberFieldClassNumber@Sqrt[#] == 9 &]