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 A154543 #11 Aug 21 2023 09:54:36 %S A154543 1,9,5,3,4,4,5,2,9,7,8,0,4,2,5,9,2,6,4,6,6,2,0,2,9,1,8,6,7,1,8,6,0,3, %T A154543 3,4,2,3,1,2,3,2,2,9,0,0,3,5,8,5,3,0,8,3,6,2,5,5,2,5,4,5,2,5,1,7,8,5, %U A154543 1,6,5,0,2,2,0,1,4,9,1,8,8,9,1,8,6,2,1,0,1,0,9,1,3,8,7,2,9,1,9 %N A154543 Decimal expansion of log_4 (15). %H A154543 Vincenzo Librandi, <a href="/A154543/b154543.txt">Table of n, a(n) for n = 1..1000</a> %H A154543 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A154543 1.9534452978042592646620291867186033423123229003585308362552... %t A154543 RealDigits[Log[4,15],10,120][[1]] (* _Harvey P. Dale_, Jul 19 2011 *) %Y A154543 Cf. decimal expansion of log_4(m): A094148 (m=3), A153201 (m=5), A153460 (m=6), A153615 (m=7), A154155 (m=10), A154176 (m=11), A154197 (m=12), A154224 (m=13), A154464 (m=14), this sequence, A154849 (m=17), A154909 (m=18), A155004 (m=19), A155183 (m=20), A155545 (m=21), A155695 (m=22), A155818 (m=23), A155936 (m=24). %K A154543 nonn,cons %O A154543 1,2 %A A154543 _N. J. A. Sloane_, Oct 30 2009