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 A094606 #10 Apr 13 2021 23:57:15 %S A094606 0,1,1,2,3,3,4,5,5,6,6,6,6,6,6,7,8,8,8,8,8,8,8,8,9,10,10,11,11,12,12, %T A094606 12,12,12,13,13,14,15,15,16,16,17,17,18,18,18,18,18,19,20,20,21,21,21, %U A094606 22,23,23,23,24,24,25,25,25,26,27,27,28,28,28,29 %N A094606 Base-2 logarithm of A094605. %C A094606 The positive integer n appears a(n)-a(n-1) times, where a(n) is A094604. %H A094606 Eric Rowland, <a href="http://www.complex-systems.com/abstracts/v16_i03_a04.html">Local nested structure in rule 30</a>, Complex Systems 16 (2006) 239-258. %Y A094606 Cf. A094604, A094605. %K A094606 nonn %O A094606 1,4 %A A094606 _Eric Rowland_, May 13 2004