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 A180689 #10 Oct 05 2019 04:55:41 %S A180689 1,214358881,3138428376721,4177248169415651,505447028499293771, %T A180689 61159090448414546291,7400249944258160101211,81402749386839761113321, %U A180689 9849732675807611094711841,108347059433883722041830251,11,121,1331,14641 %N A180689 Smallest power of 11 that begins with n. %Y A180689 Cf. A001020, A018869, A180690. %K A180689 nonn,base %O A180689 1,2 %A A180689 _Daniel Mondot_, Sep 17 2010 %E A180689 a(14) from _Michel Marcus_, Aug 30 2013