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 A083933 #9 Jan 29 2024 11:23:57 %S A083933 0,1100,11001100,11110000,110011001100,110011110000,111100001100, %T A083933 111100110000,111111000000,1100110011001100,1100110011110000, %U A083933 1100111100001100,1100111100110000,1100111111000000,1111000011001100 %N A083933 A063171-encoding of A083923-trees. %C A083933 Subset of totally balanced binary strings (A063171) with only even runs of either bit 0 or 1 occurring. %F A083933 a(n) = A007088(A083932(n)). %Y A083933 Permutation of A080317 from which this differs first time at the sixth term, with a(6)=111100001100, while A080317(6)=111111000000. %Y A083933 Cf. A007088, A063171, A083932, A083923. %K A083933 nonn %O A083933 0,2 %A A083933 _Antti Karttunen_, May 13 2003