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 A154839 #9 Aug 14 2023 11:05:46 %S A154839 9,1,0,6,8,0,9,9,4,7,8,7,8,1,1,9,9,1,9,2,8,3,0,3,8,8,8,4,0,3,5,6,3,9, %T A154839 8,2,5,6,4,2,6,2,3,6,4,9,6,5,2,9,3,1,8,4,6,6,8,2,9,9,8,2,6,8,6,2,4,3, %U A154839 4,7,3,7,0,2,7,4,1,9,0,7,0,3,3,1,5,3,7,9,2,6,1,0,6,9,3,6,3,5,5 %N A154839 Decimal expansion of log_21 (16). %H A154839 Vincenzo Librandi, <a href="/A154839/b154839.txt">Table of n, a(n) for n = 0..1000</a> %H A154839 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A154839 .91068099478781199192830388840356398256426236496529318466829... %t A154839 RealDigits[Log[21, 16], 10, 100][[1]] (* _Vincenzo Librandi_, Sep 08 2013 *) %Y A154839 Cf. decimal expansion of log_21(m): A152825 (m=2), A153097 (m=3), A153131 (m=4), A153455 (m=5), A153611 (m=6), A153632 (m=7), A153895 (m=8), A154020 (m=9), A154171 (m=10), A154192 (m=11), A154213 (m=12), A154434 (m=13), A154499 (m=14), A154707 (m=15), this sequence, A154901 (m=17), A154977 (m=18), A155129 (m=19), A155532 (m=20), A155790 (m=22), A155909 (m=23), A156028 (m=24). %K A154839 nonn,cons %O A154839 0,1 %A A154839 _N. J. A. Sloane_, Oct 30 2009