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 A154977 #9 Aug 14 2023 11:05:48 %S A154977 9,4,9,3,6,7,8,6,2,1,2,6,0,1,3,3,4,4,4,7,2,2,4,3,5,6,5,1,0,9,5,0,1,5, %T A154977 1,5,7,6,9,8,3,8,5,5,0,7,3,8,8,3,8,5,9,1,4,8,6,2,5,1,2,3,0,8,3,8,5,4, %U A154977 8,5,8,0,6,1,9,4,0,6,7,2,5,3,8,3,6,7,0,6,5,9,2,6,0,9,2,0,5,9,0 %N A154977 Decimal expansion of log_21 (18). %H A154977 Vincenzo Librandi, <a href="/A154977/b154977.txt">Table of n, a(n) for n = 0..1000</a> %H A154977 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A154977 .94936786212601334447224356510950151576983855073883859148625... %t A154977 RealDigits[Log[21,18],10,120][[1]] (* _Harvey P. Dale_, Jun 24 2013 *) %Y A154977 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), A154839 (m=16), A154901 (m=17), this sequence, A155129 (m=19), A155532 (m=20), A155790 (m=22), A155909 (m=23), A156028 (m=24). %K A154977 nonn,cons %O A154977 0,1 %A A154977 _N. J. A. Sloane_, Oct 30 2009