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 A064880 #5 Mar 16 2017 14:16:26 %S A064880 1,2,2,4,11,50,389,4590,73950,1559648,41768100,1372257648,53854228438, %T A064880 2482184155472,132554850677690,8096323604940164,559278345518698923, %U A064880 43305732768029924394,3731115433469990603265 %N A064880 Row sums of triangle A064879. %H A064880 A. J. Macfarlane, <a href="http://www.damtp.cam.ac.uk/user/ajm/Papers2016/GFsForCAsOfEvenRuleNo.ps">Generating functions for integer sequences defined by the evolution of cellular automata with even rule numbers</a>, 2016. %F A064880 a(n)= sum(A064879(n, m), m=0..n). %K A064880 nonn,easy %O A064880 0,2 %A A064880 _Wolfdieter Lang_, Oct 12 2001