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 A273128 #14 Apr 05 2024 11:10:14
%S A273128 1,0,0,1,0,0,3,0,3,0,2,0,0,2,5,0,1,2,0,1,2,4,3,0,0,1,2,0,0,1,7,3,2,3,
%T A273128 0,1,0,0,0,0,3,2,3,1,3,2,0,0,0,0,2,2,0,0,0,1,0,1,2,1,0,3,4,0,0,0,3,0,
%U A273128 0,0,1,1,1,2,2,0,3,0,0,1,0,2,1,3,0,0,2,0
%N A273128 Continued logarithm expansion of Pi.
%H A273128 Jinyuan Wang, <a href="/A273128/b273128.txt">Table of n, a(n) for n = 1..10000</a>
%H A273128 Jon Borwein, Neil Calkin, Scott Lindstrom, and Andrew Mattingly, <a href="https://carmamaths.org/resources/jon/clogs.pdf">Continued logarithms and associated continued fractions</a>, preprint, 2016.
%o A273128 (PARI) default(realprecision, 10^5); p=Pi;
%o A273128 lista(nn) = {my(c); for(n=1, nn, print1(c=logint(p\1, 2), ", "); p=1/(p/2^c-1)); } \\ _Jinyuan Wang_, Feb 27 2020
%Y A273128 Cf. A000796, A001203.
%Y A273128 Cf. A273127 (similar for e).
%K A273128 nonn
%O A273128 1,7
%A A273128 _Jeffrey Shallit_, May 16 2016