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 A239976 #14 Jul 04 2017 16:08:29 %S A239976 1,3,4,8,10,11,12,15,20,22,23,24,25,26,27,28,30,31,32,33,34,36,40,41, %T A239976 42,45,46,47,48,50,51,52,53,56,57,59,61,63,64,65,66,69,72,73,74,75,79, %U A239976 80,81,83,84,87,88,89,92,93,103,104,105,106,107,108,111,113,114,115,116,118,119,121,123 %N A239976 Positions of ones in binary representation of log(2). %H A239976 G. C. Greubel, <a href="/A239976/b239976.txt">Table of n, a(n) for n = 1..1000</a> %e A239976 log(2) = [0], [1, 0, 1, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 0, 1, ... %t A239976 Position[RealDigits[Log[2],2,200][[1]],1]//Flatten (* _Harvey P. Dale_, Aug 29 2016 *) %o A239976 (PARI) v=binary(log(2))[2]; for(i=1,#v,if(v[i],print1(i,","))); %Y A239976 Cf. A002162, A092855. %K A239976 nonn,base %O A239976 1,2 %A A239976 _Ralf Stephan_, Mar 30 2014