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 A155676 #14 Aug 21 2023 10:00:46 %S A155676 1,3,8,5,6,2,1,8,7,4,5,8,0,7,1,1,1,3,0,0,3,3,9,6,4,1,5,3,5,4,1,2,2,8, %T A155676 8,5,9,0,3,3,2,3,5,6,6,7,2,9,7,1,2,1,7,3,9,6,8,4,4,9,6,2,8,8,6,3,9,9, %U A155676 4,3,0,9,9,3,5,1,4,0,6,1,0,5,4,1,7,1,5,0,4,9,4,6,6,8,7,5,4,4,8 %N A155676 Decimal expansion of log_9 (21). %H A155676 Vincenzo Librandi, <a href="/A155676/b155676.txt">Table of n, a(n) for n = 1..1000</a> %H A155676 <a href="/index/Tra#transcendental">Index entries for transcendental numbers</a> %e A155676 1.3856218745807111300339641535412288590332356672971217396844... %t A155676 RealDigits[Log[9,21],10,120][[1]] (* _Harvey P. Dale_, May 04 2012 *) %o A155676 (PARI) default(realprecision, 100); log(21)/log(9) \\ _G. C. Greubel_, Sep 01 2018 %o A155676 (Magma) SetDefaultRealField(RealField(100)); Log(21)/Log(9); // _G. C. Greubel_, Sep 01 2018 %Y A155676 Cf. decimal expansion of log_9(m): A152747 (m=2), A153205 (m=5), A153495 (m=6), A153619 (m=7), A153756 (m=8), A154160 (m=10), A154181 (m=11), A154202 (m=12), A154339 (m=13), A154469 (m=14), A154578 (m=15), A154859 (m=17), A154947 (m=18), A155061 (m=19), A155503 (m=20), thus sequence, A155743 (m=22), A155829 (m=23), A155976 (m=24). %K A155676 nonn,cons %O A155676 1,2 %A A155676 _N. J. A. Sloane_, Oct 30 2009