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 A152825 #8 Aug 06 2020 14:15:46 %S A152825 2,2,7,6,7,0,2,4,8,6,9,6,9,5,2,9,9,7,9,8,2,0,7,5,9,7,2,1,0,0,8,9,0,9, %T A152825 9,5,6,4,1,0,6,5,5,9,1,2,4,1,3,2,3,2,9,6,1,6,7,0,7,4,9,5,6,7,1,5,6,0, %U A152825 8,6,8,4,2,5,6,8,5,4,7,6,7,5,8,2,8,8,4,4,8,1,5,2,6,7,3,4,0,8,8 %N A152825 Decimal expansion of log_21 (2). %H A152825 Vincenzo Librandi, <a href="/A152825/b152825.txt">Table of n, a(n) for n = 0..1000</a> %H A152825 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A152825 .22767024869695299798207597210089099564106559124132329616707... %t A152825 RealDigits[Log[21, 2], 10, 100][[1]] (* _Vincenzo Librandi_, Sep 06 2013 *) %o A152825 (PARI) log(2)/log(21) \\ _Charles R Greathouse IV_, Aug 06 2020 %Y A152825 Cf. decimal expansion of log_21(m): this sequence, 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), A154977 (m=18), A155129 (m=19), A155532 (m=20), A155790 (m=22), A155909 (m=23), A156028 (m=24). %K A152825 nonn,cons %O A152825 0,1 %A A152825 _N. J. A. Sloane_, Oct 30 2009