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 A023402 #26 Jan 27 2022 22:45:18 %S A023402 4,4,3,3,3,4,3,3,3,3,4,3,3,3,4,3,4,4,3,4,4,4,4,3,4,4,3,3,4,3,3,3,4,3, %T A023402 3,3,3,3,3,4,3,3,4,3,4,3,3,4,4,4,3,4,3,4,3,3,4,4,3,4,3,4,3,3,3,4,3,3, %U A023402 3,4,3,3,4,4,4,3,4,4,4,4,4,3,3,3,3,4,3,4,3,4,4,3,3,4,4,3,3,4,3,3,4,3,4,3,3,3,4,4 %N A023402 If any power of 2 ends with k 3's and 4's, they must be the first k terms of this sequence in reverse order. %H A023402 Ray Chandler, <a href="/A023402/b023402.txt">Table of n, a(n) for n = 1..10000</a> %Y A023402 Cf. A035014. %K A023402 nonn,base %O A023402 1,1 %A A023402 _David W. Wilson_