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 A302193 #6 Apr 15 2018 01:04:31 %S A302193 1,2,0,3,1,2,2,4,1,2,0,3,1,1,3,5,1,2,0,3,1,2,2,4,0,2,2,3,1,3,4,6,0,2, %T A302193 2,3,1,2,3,4,1,2,2,3,0,2,4,5,1,2,2,3,0,2,1,4,0,2,2,3,1,4,4,7,0,2,2,3, %U A302193 1,1,3,4,0,2,0,3,0,3,4,5,0,2,0,3,1 %N A302193 a(n) = log_2(A302192(n)). %Y A302193 Cf. A302191, A302192. %K A302193 nonn %O A302193 0,2 %A A302193 _N. J. A. Sloane_ and William F. Keigher, Apr 12 2018