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 A023414 #13 Jan 27 2022 22:48:08 %S A023414 8,8,8,7,7,8,7,8,7,8,8,8,8,8,7,8,8,8,7,8,8,8,8,8,7,7,8,8,7,8,8,7,8,7, %T A023414 8,8,8,7,8,7,8,7,7,8,8,7,8,7,7,7,8,8,8,8,7,7,8,7,8,8,8,7,7,7,8,7,8,8, %U A023414 7,7,7,8,7,7,8,8,7,8,8,8,7,8,8,7,8,7,8,8,7,7,8,8,7,8,8,7,8,8,7,8,7,8,7,8,7,8,8,8 %N A023414 If any power of 2 ends with k 7's and 8's, they must be the first k terms of this sequence in reverse order. %H A023414 Ray Chandler, <a href="/A023414/b023414.txt">Table of n, a(n) for n = 1..10000</a> %K A023414 nonn,base %O A023414 1,1 %A A023414 _David W. Wilson_