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 A155004 #14 Apr 04 2025 07:07:30 %S A155004 2,1,2,3,9,6,3,7,5,6,7,2,1,7,9,2,7,4,6,8,9,6,7,5,9,7,1,1,4,5,3,4,1,7, %T A155004 2,1,1,3,4,6,7,5,3,7,8,4,8,3,0,7,6,7,0,0,7,2,9,0,7,6,2,3,6,5,4,3,2,2, %U A155004 8,2,6,0,4,1,0,2,7,3,2,4,4,3,4,0,1,3,5,4,0,2,7,0,8,6,0,8,8,2,5 %N A155004 Decimal expansion of log_4 (19). %H A155004 Vincenzo Librandi, <a href="/A155004/b155004.txt">Table of n, a(n) for n = 1..1000</a> %H A155004 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A155004 2.1239637567217927468967597114534172113467537848307670072907... %t A155004 RealDigits[Log[4, 19], 10, 100][[1]] (* _Vincenzo Librandi_, Aug 30 2013 *) %o A155004 (PARI) log(19)/log(4) \\ _Stefano Spezia_, Apr 04 2025 %Y A155004 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), A154543 (m=15), A154849 (m=17), A154909 (m=18), this sequence, A155183 (m=20), A155545 (m=21), A155695 (m=22), A155818 (m=23), A155936 (m=24). %Y A155004 Cf. A016627, A016642. %K A155004 nonn,cons %O A155004 1,1 %A A155004 _N. J. A. Sloane_, Oct 30 2009