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 A165481 #3 Mar 31 2012 13:21:19 %S A165481 0,1,1,1,1,-1,1,-1,1,1,-1,-1,1,-1,-1,-1,1,-1,1,1,-1,-1,-1,-1,1,1,-1,1, %T A165481 -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 A165481 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 %N A165481 Legendre symbol (n,28657). %C A165481 28657 is the 8th Fibonacci prime, A005478(8) = A000045(23). %H A165481 A. Karttunen, <a href="/A165481/b165481.txt">Table of n, a(n) for n = 0..28657</a> %Y A165481 Partial sums: A165482. %K A165481 sign,mult %O A165481 0,1 %A A165481 _Antti Karttunen_, Sep 21 2009