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 A155677 #7 Aug 06 2020 14:11:50 %S A155677 1,3,2,2,2,1,9,2,9,4,7,3,3,9,1,9,2,6,8,0,0,7,2,4,4,1,6,1,8,4,7,7,5,1, %T A155677 5,0,2,6,8,3,7,0,1,2,6,0,5,1,4,6,6,1,2,7,1,3,3,3,5,0,0,5,9,4,0,2,3,4, %U A155677 8,2,5,9,2,6,8,5,7,4,0,2,8,9,1,0,9,0,7,9,8,8,3,4,9,5,1,0,4,8,7 %N A155677 Decimal expansion of log_10 (21). %H A155677 Vincenzo Librandi, <a href="/A155677/b155677.txt">Table of n, a(n) for n = 1..1000</a> %H A155677 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A155677 1.3222192947339192680072441618477515026837012605146612713335... %t A155677 RealDigits[Log[10, 21], 10, 100][[1]] (* _Vincenzo Librandi_, Sep 11 2013 *) %o A155677 (PARI) log(21)/log(10) \\ _Charles R Greathouse IV_, Aug 06 2020 %Y A155677 Cf. decimal expansion of log_10(m): A007524 (m=2), A114490 (m=3), A114493 (m=4), A153268 (m=5), A153496 (m=6), A153620 (m=7), A153790 (m=8), A104139 (m=9), A154182 (m=11), A154203 (m=12), A154368 (m=13), A154478 (m=14), A154580 (m=15), A154794 (m=16), A154860 (m=17), A154953 (m=18), A155062 (m=19), A155522 (m=20), this sequence, A155746 (m=22), A155830 (m=23), A155979 (m=24). %K A155677 nonn,cons %O A155677 1,2 %A A155677 _N. J. A. Sloane_, Oct 30 2009