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 A014077 #15 Apr 01 2019 05:37:05 %S A014077 -1,-1,1,-1,-1,1,1,1,-1,1,-1,-1,-1,1,-1,1,1,1,-1,-1,1,-1,1,1,-1,1,-1, %T A014077 1,1,-1,-1,-1,1,-1,-1,1,1,1,1,1,-1,1,1,-1,-1,1,1,-1,1,1,1,1,-1,1,-1,1, %U A014077 -1,1,-1,-1,1,1,1,1,1,1,1,1,-1,-1,-1,1,1,-1,1,1,1,-1,1,-1,1,-1 %N A014077 Norm of fundamental unit of real quadratic field with discriminant A003658(n), n >= 2. %C A014077 See A014000 for details about the indexing. %D A014077 H. Cohen, A Course in Computational Algebraic Number Theory, Springer, 1993, pp. 515-519. %Y A014077 Cf. A003658, A003652, A014000, A014046. %K A014077 sign %O A014077 2,1 %A A014077 Eric Rains (rains(AT)caltech.edu) %E A014077 Offset corrected by _Jianing Song_, Mar 31 2019