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 A050967 #13 Sep 20 2021 09:24:06 %S A050967 139,163,283,417,419,566,633,737,758,781,787,998,1141,1142,1163,1286, %T A050967 1307,1337,1461,1718,1829,1931,2243,2537,2653,2966,2973,3013,3117, %U A050967 3629,3713,4061,4269,4541,4781,6629,6717,7037,7133,7181,8013,8157,8197,8301,8777,9957,10277,10493,11429,11957,12293,13373,13917,16373,18653,18813,18893,20597,23597,24173,26837,30917 %N A050967 Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 18. %D A050967 R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A. %H A050967 R. A. Mollin and H. C. Williams, <a href="http://projecteuclid.org/euclid.pja/1195512263">On a determination of real quadratic fields of class number one and related continued fraction period length less than 25</a>, Proc. Japan Acad. Ser. A Math. Sci. Volume 67, Number 1 (1991), 20-25. (cf. Table 3.1) %Y A050967 Cf. A050950-A050969, A051962-A051965. %K A050967 nonn,fini,full %O A050967 1,1 %A A050967 _N. J. A. Sloane_, Jan 04 2000 %E A050967 a(42) and following from _Georg Fischer_, Sep 20 2021