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 A169913 #6 Mar 30 2012 17:38:11 %S A169913 0,0,3,5,11,23,45,89,179,344,701,1366,2672,5290,10428,20400,40207, %T A169913 79206,155717,307072,606263,1194231,2361275,4668863,9228695,18290082, %U A169913 36249420,71861874,142662288,283409860,563270809,1120416558,2229577195,4438853135,8843117452,17624956422,35136263159,70081625113,139821120157 %N A169913 Number of reducible Boolean polynomials of degree n. %C A169913 See A169912 for details. %H A169913 <a href="/index/Ca#CARRYLESS">Index entries for sequences related to carryless arithmetic</a> %Y A169913 Cf. A169912, A169914. %K A169913 nonn %O A169913 0,3 %A A169913 _David Applegate_, _Marc LeBrun_ and _N. J. A. Sloane_, Jul 11 2010 %E A169913 More terms from _David Applegate_, Jul 19 2010