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 A317950 #6 Aug 18 2018 08:43:36 %S A317950 1,-1,2,-2,1,-1,0,1,-1,2,-2,1,-1,1,-1,2,-2,1,-1,0,1,-1,2,-2,1,-1,2,-2, %T A317950 1,-1,0,1,-1,2,-2,1,-1,1,-1,2,-2,1,-1,0,1,-1,2,-2,1,-1,0,1,-1,2,-2,1, %U A317950 -1,1,-1,2,-2,1,-1,0,1,-1,2,-2,1,-1,2,-2,1,-1,0,1,-1,2,-2,1,-1,1,-1,2,-2,1,-1,0,1,-1,2,-2,1 %N A317950 First differences of ternary tribonacci word A080843. %C A317950 Also first differences of A092782. %H A317950 Seiichi Manyama, <a href="/A317950/b317950.txt">Table of n, a(n) for n = 0..10000</a> %Y A317950 Cf. A080843, A092782. %K A317950 sign %O A317950 0,3 %A A317950 _N. J. A. Sloane_, Aug 17 2018