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 A084450 #4 Jul 29 2017 12:39:04 %S A084450 111,1011,1101,1110,111,10011,11001,11100,1110,111,100011,10101,11010, %T A084450 1101,10110,1011,100101,110010,11001,101100,10110,1011,1000101,100110, %U A084450 10011,101001,110100,11010,1101,1000110,100011,110001,111000,11100,1110 %N A084450 Sequence A084451 in binary. %F A084450 a(n) = A007088(A084451(n)). %K A084450 nonn %O A084450 0,1 %A A084450 _Antti Karttunen_, Jun 02 2003