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 A096104 #6 Dec 05 2013 19:56:53 %S A096104 1,11,21,111,211,221,321,1111,2111,2211,3211,2221,3221,3321,4321, %T A096104 11111,21111,22111,32111,22211,32211,33211,43211,22221,32221,33221 %N A096104 Digit reversal of A096299(n). %C A096104 First occurrence of n is the most significant digit of a(2^n-1). %Y A096104 Cf. A096299. %K A096104 easy,nonn,base %O A096104 1,2 %A A096104 _Amarnath Murthy_, Jun 26 2004