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 A050961 #7 May 24 2013 07:08:13 %S A050961 46,103,127,177,209,239,263,479,734,887,933,973,1149,1541,1589,1661, %T A050961 1797,1837,2229,2933,3269,3309,3453,4829,6261,6333,6797,7637,10757, %U A050961 12381 %N A050961 Discriminants of real quadratic fields with class number 1 and related continued fraction period length of 12. %D A050961 R. A. Mollin, Quadratics, CRC Press, 1996, Appendix A. %H A050961 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 A050961 Cf. A050950-A050969, A051962-A051965. %K A050961 nonn,fini,full %O A050961 1,1 %A A050961 _N. J. A. Sloane_, Jan 04 2000