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 A080317 #5 Jan 11 2024 10:53:59 %S A080317 0,1100,11001100,11110000,110011001100,110011110000,111111000000, %T A080317 111100001100,111100110000,1100110011001100,1100110011110000, %U A080317 1100111111000000,1100111100001100,1100111100110000,1111110000001100 %N A080317 a(n) = A007088(A080316(n)). %C A080317 Note that here we have totally balanced binary sequences (as in A014486/A063171), 10, 1010, 1100, 101010, 101100, 110010, ..., but with each bit duplicated. Furthermore, the order is a bit different. %K A080317 nonn %O A080317 0,2 %A A080317 _Antti Karttunen_, Mar 02 2003