This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A218160 #6 Feb 16 2025 08:33:18 %S A218160 3129,3585,4097,4321,4444,4865,4904,5777,6085,6945,7049,7221,7705, %T A218160 8124,8321,8569,9321,9340,9448,9553,9669,10408,10885,11281,11509, %U A218160 11921,11937,11944,12984,12993,12997,13516,13741,13865,14392,14396,14529,14745,14888 %N A218160 Fundamental discriminants of real quadratic number fields with class number 10. %H A218160 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/ClassNumber.html">Class Number</a> %H A218160 <a href="/index/Qua#quadfield">Index entries for sequences related to quadratic fields</a> %t A218160 Select[Range[14888], NumberFieldDiscriminant@Sqrt[#] == # && NumberFieldClassNumber@Sqrt[#] == 10 &] %Y A218160 Cf. A003656, A094619, A094612-A094614, A218156-A218159. %K A218160 nonn %O A218160 1,1 %A A218160 _Arkadiusz Wesolowski_, Oct 22 2012