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 A120742 #5 Mar 30 2012 16:50:29 %S A120742 -21,13,-3,0,-1,-9,15,3,-8,5,-12,10,-13,0,1,9,6,-3,-12,3,13,-17,14, %T A120742 -10,15,-5,-14,17,-17,9,-9,4,-2,1,12,-6,-5,5,-9,15,-15,9,-9,7,-7,17, %U A120742 -17,9,6,3,-18,7,10,-17,15,-12,1,9,2,-15,0,9,-8,9,6,-3,2,-15,0,9,-8,3,-3,14,-15,0,9,5,-10,15,-4,-15 %N A120742 First differences of A073029. %C A120742 Suggested by A131744. %K A120742 sign,word %O A120742 0,1 %A A120742 _N. J. A. Sloane_, Sep 21 2007