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 A228243 #19 Feb 16 2025 08:33:20 %S A228243 20,111,56,9041,4767,674596,24611354,64653957,131278082 %N A228243 First occurrence of n consecutive n's in the decimal expansion of log(10). %C A228243 Earls sequence for log(10). %H A228243 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/NaturalLogarithmof10Digits.html">Natural Logarithm of 10 Digits</a> %H A228243 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/EarlsSequence.html">Earls Sequence</a> %e A228243 log(10) = 2.302585092994045684017...4228.., so %e A228243 a(1) = 20 (the digit string 1 first occurs at position 20 after the decimal point) %e A228243 a(2) = 111 (the digit string 22 first occurs starting at position 111 after the decimal point) %Y A228243 Cf. A002392 (decimal expansion of log(10)). %K A228243 nonn,base %O A228243 1,1 %A A228243 _Eric W. Weisstein_, Aug 17 2013