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 A091446 #5 Aug 19 2015 15:06:18 %S A091446 0,1,0,0,1,0,0,1,1,1,0,0,0,1,0,0,0,1,0,0,0,1,1,1,0,1,0,1,0,1,1,1,1,1, %T A091446 0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1,1,1,0,0,1,0,1,0,1,0,0,1,0,1, %U A091446 1,0,0,1,0,1,0,0,1,1,1,1,1,0,1,1,0,1,1,0,1,1,0,1,1,1,1,1,1,1 %N A091446 Concatenate binary vectors ordered first by length, then by the number of 1's and finally by an 'unusual' lexicographical ordering (1 comes before 0). %Y A091446 Cf. A076478, A091444, A091445, A091447. %K A091446 easy,nonn %O A091446 0,1 %A A091446 _Paul Boddington_, Jan 10 2004