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 A051964 #12 Sep 20 2021 10:18:21 %S A051964 433,457,641,881,1381,1913,2393,2749,3389,3733,4421,5653,6701,7349, %T A051964 7949,8669,10253,11813,12413,13709,13757,14717,14813,14957,15749, %U A051964 16229,16453,19037,19421,22613,22853,24317,27653,28517,30197,31253,33893,37397 %N A051964 Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 23. %D A051964 R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A. %H A051964 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 A051964 Cf. A050950-A050969, A051962-A051965. %K A051964 nonn,fini,full %O A051964 1,1 %A A051964 _N. J. A. Sloane_, Jan 04 2000 %E A051964 a(37), a(38) from _Georg Fischer_, Sep 20 2021