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 A100880 #4 Mar 30 2012 16:50:07 %S A100880 1,2,4,8,1,6,1,7,2,3,2,4,3,1,3,3,3,6,3,8,4,2,4,5,4,6,4,9,5,2,5,5,6,1, %T A100880 6,4,7,2,7,6,7,8,8,2,8,7,9,1,9,7,1,0,1,1,1,0,1,1,5,1,1,7,1,2,2,1,2,7, %U A100880 1,3,3,1,3,4,1,4,0,1,4,4,1,5,1,1,5,3,1,6,0,1,6,6,1,7,3,1,8,1,1 %N A100880 First differences of A100787. %D A100880 E. Angelini, "Jeux de suites", in Dossier Pour La Science, pp. 32-35, Volume 59 (Jeux math'), April/June 2008, Paris. %K A100880 nonn %O A100880 1,2 %A A100880 _N. J. A. Sloane_, Jan 11 2005