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 A216582 #41 Sep 08 2022 08:46:03 %S A216582 1,6,5,1,4,9,6,1,2,9,4,7,2,3,1,8,7,9,8,0,4,3,2,7,9,2,9,5,1,0,8,0,0,7, %T A216582 3,3,5,0,1,8,4,7,6,9,2,6,7,6,3,0,4,1,5,2,9,4,0,6,7,8,8,5,1,5,4,8,8,1, %U A216582 0,2,9,6,3,5,8,4,5,4,1,4,3,8,9,6,0,2,6 %N A216582 Decimal expansion of the logarithm of Pi to base 2. %D A216582 Jörg Arndt and Christoph Haenel, Pi Unleashed, New York: Springer (2001), p. 239. %H A216582 G. C. Greubel, <a href="/A216582/b216582.txt">Table of n, a(n) for n = 1..10000</a> %F A216582 Log_2(Pi) = log(Pi) / log(2) = A053510 / A002162. %F A216582 Equals (A061444 / A002162) - 1 = (A094642 / A002162) + 1. - _John W. Nicholson_, Mar 12 2019 %e A216582 1.651496129472318798... %p A216582 evalf(log[2](Pi)) ; # _R. J. Mathar_, Sep 11 2012 %t A216582 RealDigits[Log[2, Pi], 10, 105][[1]] %o A216582 (Sage) log(pi,2).n(digits=100) # _Jani Melik_, Oct 05 2012 %o A216582 (PARI) log(Pi)/log(2) \\ _Michel Marcus_, Mar 05 2019 %o A216582 (Magma) SetDefaultRealField(RealField(100)); R:= RealField(); Log(Pi(R))/Log(2); // _G. C. Greubel_, Apr 08 2019 %Y A216582 Cf. A002162, A020857, A053510, A053511, A061444, A094642. %K A216582 nonn,cons,easy %O A216582 1,2 %A A216582 _Alonso del Arte_, Sep 09 2012